Add refinery driver for libsql. #514

Job	Run time
cargo-audit	18s
set-rust-versions	3s
Cargo fmt and clippy	1m 28s
Build docs	1m 2s
Test postgres (stable)	1m 48s
Test mysql-async (stable)	1m 17s
Test postgres (nightly)	2m 9s
test-macros-and-cli (stable, windows-latest)	3m 2s
Test mysql-async (nightly)	1m 12s
Test mysql (stable)	2m 15s
Test postgres (1.75)	1m 52s
test-macros-and-cli (stable, ubuntu-latest)	2m 12s
Test mysql-async (1.75)	1m 12s
Test mysql (nightly)	2m 18s
test-macros-and-cli (nightly, windows-latest)	3m 9s
Test mysql (1.75)	2m 24s
test-macros-and-cli (nightly, ubuntu-latest)	2m 25s
Test Sqlite (stable)	1m 49s
test-macros-and-cli (1.75, windows-latest)	3m 6s
Test tiberius (stable)	2m 0s
Test Sqlite (nightly)	1m 50s
test-macros-and-cli (1.75, ubuntu-latest)	2m 29s
Test tiberius (nightly)	2m 1s
Test tokio-postgres (stable)	58s
Test Sqlite (1.75)	1m 57s
Test tiberius (1.75)	2m 8s
Test tokio-postgres (nightly)	1m 0s
Test tokio-postgres (1.75)	1m 5s
CI is green	0s
	50m 29s

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