feat(rust): add integration tests and some improvements

[alexandreyc]

This should be the last PR for the initial Rust implementation.

It includes:

• An integration test for the driver manager against the official SQLite driver
• An integration test for the dummy driver against itself (comparing output when using the Rust API and when using its exported version through the driver manager)
• New info codes and options which have been added recently
• An enum for identifying statistics

Note that I also have an integration test for the driver manager against the official PostgreSQL driver but it needs a running PostgreSQL instance to be executed, so it cannot be easily integrated into the CI. This test proved useful during development as it allowed me to catch some bugs. The existence of this test is the reason why there is a common module. Maybe we can add it in a follow-up PR?

[mbrobbel]

Anything I can do to help make progress here?

[alexandreyc]

Sorry, I've been quite busy these past two weeks.

I just updated the description of the PR which should give you up-to-date informations.

I think you can start reviewing it!

[mbrobbel]

Looks good to me.

[lidavidm]

Presumably that clang-tidy check doesn't need to be in the Rust pipeline? But that can be fixed separately

[lidavidm]

Note that I also have an integration test for the driver manager against the official PostgreSQL driver but it needs a running PostgreSQL instance to be executed, so it cannot be easily integrated into the CI. This test proved useful during development as it allowed me to catch some bugs. The existence of this test is the reason why there is a common module. Maybe we can add it in a follow-up PR?

See the integration.yml pipeline which does this - can probably duplicate it for Rust or figure out how to work Rust into it