Add native bitstring support to Postgres(#577) #1556

Job	Run time
mssql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 2017)	3s
mssql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 2017)	2m 5s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 15.0)	1m 19s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 15.0)	1m 19s
mssql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 2019)	1m 40s
mssql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 2019)	1m 40s
mysql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 5.7)	1m 42s
mysql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 5.7)	1m 42s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 11.11)	1m 21s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 11.11)	1m 21s
unittest (1.15.6, 24.3.4.13)	32s
unittest (1.15.6, 24.3.4.13)	32s
mysql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 8.0)	1m 46s
mysql integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 8.0)	1m 46s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 9.6)	1m 21s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 9.6)	1m 21s
unittest (1.15.6, 26.1.2, lint)	34s
unittest (1.15.6, 26.1.2, lint)	34s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 9.5)	3m 28s
postgres integration test (1.11.4-erlang-21.3.8.24-alpine-3.13.3, 9.5)	3m 28s
	29m 34s

Provide feedback