Add DbDataSource implementation

[smbecker]

This PR adds a DbDataSource implementation, which makes integration into DI containers much simpler.

[smbecker]

@DarkWanderer, any advice on why the "compare coverage" workflow is failing?

[DarkWanderer]

Greetings. This run unfortunately doesn't work between fork and main repo due to GitHub behavior quirk I haven't nailed down. I have disabled it in 'main' for now - checks should pass now if you rebase

P.S. I think it would be beneficial to add some tests here, even if trivial "create and call 1-2 methods"

[smbecker]

Greetings. This run unfortunately doesn't work between fork and main repo due to GitHub behavior quirk I haven't nailed down. I have disabled it in 'main' for now - checks should pass now if you rebase

Rebased

P.S. I think it would be beneficial to add some tests here, even if trivial "create and call 1-2 methods"

Added a test

[DarkWanderer]

LGTM - thanks for your contribution!

It would also be beneficial to add it to ClickHouseConnectionFactory, so it's helpful for even more users

[smbecker]

It would also be beneficial to add it to ClickHouseConnectionFactory, so it's helpful for even more users

I guess I didn't even realize that DbProviderFactory had an overload for CreateDataSource. Implemented in #557.