feat(core/dns): new dns client library #35324

Job	Run time
build / Build dependencies	13s
PDK tests	3m 59s
Schedule busted tests to run	9s
Lint and Doc tests	15s
Busted test runner 1	14m 38s
Busted test runner 2	14m 2s
Busted test runner 3	14m 3s
Busted test runner 4	13m 49s
Busted test runner 5	14m 26s
Busted test runner 6	13m 59s
Busted test runner 7	13m 49s
Cleanup and Luacov stats aggregator	0s
	1h 43m 22s

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