feat: sqlserver / mssql support #1096

Job	Run time
Checks	1m 49s
Checks	1m 49s
Run test with H2	3m 13s
Run test with H2	3m 13s
Run test with Postgres	3m 38s
Run test with Postgres	3m 38s
Docs	1m 11s
Docs	1m 11s
Run test with Postgres and JSONB payload	1m 27s
Run test with Postgres and JSONB payload	1m 27s
Run test with SQL Server	3m 42s
Run test with SQL Server	3m 36s
Run tests with Yugabyte	4m 8s
Run tests with Yugabyte	4m 8s
	38m 10s

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