SQLx

Address clippy warnings and add to gh actions #290

Job	Run time
Format	17s
Unit Test (tokio, rustls)	31s
CLI Binaries (windows-latest)	1m 11s
Check (async-std, native-tls)	54s
CLI Binaries (ubuntu-latest)	31s
Check (async-std, rustls)	3s
Check (tokio, rustls)	10s
Check (tokio, native-tls)	36s
SQLite	0s
Postgres with SSL client cert	0s
MariaDB	0s
MSSQL	0s
MySQL	0s
Postgres	0s
	4m 13s

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