Add java JNA FFI client benchmarking

[Yury-Fridlyand]

The rust part based on code from #25, so get doesn't work as well. It is a sync client.

Repro instructions:

1. Check out java-jna-ffi branch
2. cd java
3. cargo build
4. ./gradlew :benchmarks:run

TODOs:

• Automate rust lib copying by gradle

Config	Action	Java FFI JNA	Jedis	Lettuce
1 client 10 concurrent	Get NE p50	0.117	0.025	0.047
1 client 10 concurrent	Get NE p90	0.126	0.028	0.053
1 client 10 concurrent	Get NE p99	0.167	0.037	0.096
1 client 10 concurrent	Get NE avg	0.115	0.025	0.049
1 client 10 concurrent	Get NE std	0.097	0.003	0.016
1 client 10 concurrent	Get E p50	0.118	0.025	0.047
1 client 10 concurrent	Get E p90	0.131	0.028	0.054
1 client 10 concurrent	Get E p99	0.170	0.037	0.100
1 client 10 concurrent	Get E avg	0.119	0.028	0.050
1 client 10 concurrent	Get E std	0.147	0.561	0.024
1 client 10 concurrent	Set p50		0.027	0.049
1 client 10 concurrent	Set p90		0.034	0.059
1 client 10 concurrent	Set p99		0.045	0.108
1 client 10 concurrent	Set avg		0.028	0.053
1 client 10 concurrent	Set std		0.005	0.025
2 client 10 concurrent	Get NE p50	0.101	0.024	0.044
2 client 10 concurrent	Get NE p90	0.112	0.025	0.048
2 client 10 concurrent	Get NE p99	0.155	0.033	0.065
2 client 10 concurrent	Get NE avg	0.108	0.024	0.045
2 client 10 concurrent	Get NE std	0.418	0.002	0.004
2 client 10 concurrent	Get E p50	0.103	0.024	0.045
2 client 10 concurrent	Get E p90	0.116	0.025	0.049
2 client 10 concurrent	Get E p99	0.161	0.033	0.066
2 client 10 concurrent	Get E avg	0.107	0.024	0.046
2 client 10 concurrent	Get E std	0.204	0.010	0.005
2 client 10 concurrent	Set p50		0.025	0.046
2 client 10 concurrent	Set p90		0.027	0.051
2 client 10 concurrent	Set p99		0.034	0.069
2 client 10 concurrent	Set avg		0.025	0.047
2 client 10 concurrent	Set std		0.002	0.005
1 client 100 concurrent	Get NE p50	0.105	0.024	0.045
1 client 100 concurrent	Get NE p90	0.118	0.025	0.048
1 client 100 concurrent	Get NE p99	0.140	0.033	0.057
1 client 100 concurrent	Get NE avg	0.106	0.025	0.045
1 client 100 concurrent	Get NE std	0.231	0.002	0.003
1 client 100 concurrent	Get E p50	0.107	0.024	0.045
1 client 100 concurrent	Get E p90	0.123	0.025	0.048
1 client 100 concurrent	Get E p99	0.147	0.033	0.057
1 client 100 concurrent	Get E avg	0.110	0.025	0.045
1 client 100 concurrent	Get E std	0.412	0.016	0.003
1 client 100 concurrent	Set p50		0.025	0.046
1 client 100 concurrent	Set p90		0.026	0.049
1 client 100 concurrent	Set p99		0.034	0.058
1 client 100 concurrent	Set avg		0.025	0.046
1 client 100 concurrent	Set std		0.002	0.013
2 client 100 concurrent	Get NE p50	0.107	0.024	0.046
2 client 100 concurrent	Get NE p90	0.119	0.025	0.048
2 client 100 concurrent	Get NE p99	0.137	0.033	0.058
2 client 100 concurrent	Get NE avg	0.107	0.024	0.046
2 client 100 concurrent	Get NE std	0.034	0.002	0.003
2 client 100 concurrent	Get E p50	0.110	0.024	0.046
2 client 100 concurrent	Get E p90	0.125	0.025	0.048
2 client 100 concurrent	Get E p99	0.141	0.033	0.058
2 client 100 concurrent	Get E avg	0.112	0.024	0.046
2 client 100 concurrent	Get E std	0.545	0.001	0.005
2 client 100 concurrent	Set p50		0.025	0.047
2 client 100 concurrent	Set p90		0.026	0.050
2 client 100 concurrent	Set p99		0.034	0.060
2 client 100 concurrent	Set avg		0.025	0.047
2 client 100 concurrent	Set std		0.054	0.003