SQLx

Implement snowflake support via sql api #316

Job	Run time
CLI Binaries (windows-latest)	1m 38s
Format	9s
CLI Binaries (ubuntu-latest)	48s
Check (async-std, native-tls)	3m 39s
Check (tokio, native-tls)	3m 52s
Check (tokio, rustls)	3m 53s
Unit Test (tokio, rustls)	1m 37s
Check (async-std, rustls)	3m 53s
MSSQL	0s
MySQL	0s
Postgres with SSL client cert	0s
MariaDB	0s
Postgres	0s
SQLite	0s
	19m 29s

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