Upgrade sqlx and implement db detection #1725

Job	Run time
compile_and_lint	2m 23s
windows_test	2m 59s
test (mysql, mysql, mysql://root:Password123!@127.0.0.1/sqlpage)	2m 4s
test (postgres, postgres, postgres://root:Password123!@127.0.0.1/sqlpage)	2m 28s
test (odbc, postgres, Driver={PostgreSQL Unicode};Server=127.0.0.1;Port=5432;Database=sqlpage;UID...	3m 14s
docker_build (linux/amd64)	7m 57s
docker_build (linux/arm/v7)	1m 29s
docker_build (linux/arm64)	46s
test (mssql, mssql, mssql://root:Password123!@127.0.0.1/sqlpage)	2m 35s
docker_push	0s
	25m 55s

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