Generic implementation of Queueimpl7

[lovromazgon]

This PR adds the following:

• initializes a Go module
• updates benchmark for github.com/gammazero/deque (it is now using generics)
• implements a generic version of Queueimpl7 and adds a benchmark for it

After running benchmarks on my machine, it seems that the generic version is even a bit faster than the non-generic version.

Benchmark results

go test -bench=. benchmark_test.go
goos: darwin
goarch: amd64
cpu: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
BenchmarkList/0-16          	36096993	        33.10 ns/op
BenchmarkList/1-16          	15740581	        72.43 ns/op
BenchmarkList/10-16         	 2861898	       425.1 ns/op
BenchmarkList/100-16        	  263336	      4220 ns/op
BenchmarkList/1000-16       	   25462	     47118 ns/op
BenchmarkList/10000-16      	    2110	    534454 ns/op
BenchmarkList/100000-16     	     127	   9137029 ns/op
BenchmarkChannel/0-16       	35017080	        31.85 ns/op
BenchmarkChannel/1-16       	15119679	        76.04 ns/op
BenchmarkChannel/10-16      	 2512936	       470.3 ns/op
BenchmarkChannel/100-16     	  249133	      4416 ns/op
BenchmarkChannel/1000-16    	   23700	     49719 ns/op
BenchmarkChannel/10000-16   	    2091	    527633 ns/op
BenchmarkChannel/100000-16  	     219	   5352969 ns/op
BenchmarkGammazero/0-16     	1000000000	         1.158 ns/op
BenchmarkGammazero/1-16     	23397309	        44.38 ns/op
BenchmarkGammazero/10-16    	 9304092	       127.2 ns/op
BenchmarkGammazero/100-16   	  668485	      1562 ns/op
BenchmarkGammazero/1000-16  	   57878	     20585 ns/op
BenchmarkGammazero/10000-16 	    4836	    221882 ns/op
BenchmarkGammazero/100000-16         	     477	   2449230 ns/op
BenchmarkPhf/0-16                    	49410674	        23.23 ns/op
BenchmarkPhf/1-16                    	35873148	        31.50 ns/op
BenchmarkPhf/10-16                   	 2566104	       458.0 ns/op
BenchmarkPhf/100-16                  	  405482	      2672 ns/op
BenchmarkPhf/1000-16                 	   45190	     26028 ns/op
BenchmarkPhf/10000-16                	    4074	    266890 ns/op
BenchmarkPhf/100000-16               	     237	   5075018 ns/op
BenchmarkJuju/0-16                   	 3639322	       324.1 ns/op
BenchmarkJuju/1-16                   	 3553687	       337.7 ns/op
BenchmarkJuju/10-16                  	 2811319	       427.6 ns/op
BenchmarkJuju/100-16                 	  624660	      1837 ns/op
BenchmarkJuju/1000-16                	   56377	     21430 ns/op
BenchmarkJuju/10000-16               	    4329	    241211 ns/op
BenchmarkJuju/100000-16              	     369	   3212147 ns/op
BenchmarkImpl1/0-16                  	286230117	         4.186 ns/op
BenchmarkImpl1/1-16                  	28610796	        36.27 ns/op
BenchmarkImpl1/10-16                 	 3347899	       362.3 ns/op
BenchmarkImpl1/100-16                	  680595	      1635 ns/op
BenchmarkImpl1/1000-16               	   52677	     21847 ns/op
BenchmarkImpl1/10000-16              	    4353	    246534 ns/op
BenchmarkImpl1/100000-16             	     136	   8901747 ns/op
BenchmarkImpl2/0-16                  	278119263	         4.377 ns/op
BenchmarkImpl2/1-16                  	28694433	        36.99 ns/op
BenchmarkImpl2/10-16                 	 3432369	       355.2 ns/op
BenchmarkImpl2/100-16                	  650058	      1645 ns/op
BenchmarkImpl2/1000-16               	   54530	     21765 ns/op
BenchmarkImpl2/10000-16              	    3944	    286462 ns/op
BenchmarkImpl2/100000-16             	     136	   8631269 ns/op
BenchmarkImpl3/0-16                  	 2795673	       422.7 ns/op
BenchmarkImpl3/1-16                  	 2726344	       431.1 ns/op
BenchmarkImpl3/10-16                 	 2419592	       488.0 ns/op
BenchmarkImpl3/100-16                	  999382	      1041 ns/op
BenchmarkImpl3/1000-16               	   70945	     16683 ns/op
BenchmarkImpl3/10000-16              	    6306	    192223 ns/op
BenchmarkImpl3/100000-16             	     532	   2215646 ns/op
BenchmarkImpl4/0-16                  	 3473112	       342.2 ns/op
BenchmarkImpl4/1-16                  	 3378958	       353.7 ns/op
BenchmarkImpl4/10-16                 	 2882436	       416.4 ns/op
BenchmarkImpl4/100-16                	 1219239	       980.0 ns/op
BenchmarkImpl4/1000-16               	   74776	     16138 ns/op
BenchmarkImpl4/10000-16              	    5860	    193688 ns/op
BenchmarkImpl4/100000-16             	     452	   2592877 ns/op
BenchmarkImpl5/0-16                  	 3095726	       383.5 ns/op
BenchmarkImpl5/1-16                  	 2985129	       405.7 ns/op
BenchmarkImpl5/10-16                 	 2607858	       460.0 ns/op
BenchmarkImpl5/100-16                	  999908	      1015 ns/op
BenchmarkImpl5/1000-16               	   69468	     16653 ns/op
BenchmarkImpl5/10000-16              	    5889	    197066 ns/op
BenchmarkImpl5/100000-16             	     415	   2834379 ns/op
BenchmarkImpl6/0-16                  	717184951	         1.692 ns/op
BenchmarkImpl6/1-16                  	17817142	        63.48 ns/op
BenchmarkImpl6/10-16                 	 3145177	       386.9 ns/op
BenchmarkImpl6/100-16                	  650286	      1635 ns/op
BenchmarkImpl6/1000-16               	   62350	     19002 ns/op
BenchmarkImpl6/10000-16              	    5012	    213779 ns/op
BenchmarkImpl6/100000-16             	     499	   2388561 ns/op
BenchmarkImpl7/0-16                  	1000000000	         1.005 ns/op
BenchmarkImpl7/1-16                  	19193989	        59.29 ns/op
BenchmarkImpl7/10-16                 	 3058149	       400.5 ns/op
BenchmarkImpl7/100-16                	  724555	      1444 ns/op
BenchmarkImpl7/1000-16               	   68046	     17667 ns/op
BenchmarkImpl7/10000-16              	    5490	    199761 ns/op
BenchmarkImpl7/100000-16             	     526	   2275840 ns/op
BenchmarkImpl7Generic/0-16           	1000000000	         1.015 ns/op
BenchmarkImpl7Generic/1-16           	21470794	        49.56 ns/op
BenchmarkImpl7Generic/10-16          	 4868738	       242.6 ns/op
BenchmarkImpl7Generic/100-16         	  929288	      1138 ns/op
BenchmarkImpl7Generic/1000-16        	   72534	     16419 ns/op
BenchmarkImpl7Generic/10000-16       	    6132	    188530 ns/op
BenchmarkImpl7Generic/100000-16      	     644	   1865776 ns/op
BenchmarkCookiejar/0-16              	  135667	      8730 ns/op
BenchmarkCookiejar/1-16              	  136633	      8764 ns/op
BenchmarkCookiejar/10-16             	  135256	      8783 ns/op
BenchmarkCookiejar/100-16            	  125581	      9418 ns/op
BenchmarkCookiejar/1000-16           	   49455	     24119 ns/op
BenchmarkCookiejar/10000-16          	    5970	    193347 ns/op
BenchmarkCookiejar/100000-16         	     519	   2263696 ns/op
BenchmarkBcmills/0-16                	527711010	         2.181 ns/op
BenchmarkBcmills/1-16                	30507412	        37.13 ns/op
BenchmarkBcmills/10-16               	 1707492	       706.4 ns/op
BenchmarkBcmills/100-16              	  475962	      2306 ns/op
BenchmarkBcmills/1000-16             	   33268	     35265 ns/op
BenchmarkBcmills/10000-16            	    3345	    331535 ns/op
BenchmarkBcmills/100000-16           	      84	  11991809 ns/op
PASS
ok  	command-line-arguments	146.154s