Introduce UseAzureSynapse and UseAzureSql

[cincuranet]

Fixes #33816

[AndriySvyryd]

@cincuranet Let me know once this is ready for review again

[cincuranet]

@AndriySvyryd This should be now ready for review.

[AndriySvyryd]

Looking at this again I find it confusing that you can call .UseSqlServer(b => UseAzureSqlCompatibilityLevel())
Each of the Use* methods should accept a different builder type, then they each could just have a UseCompatibilityLevel method that corresponds to the target engine.
Additionally, for ConfigureSqlEngine the builder should have a non-obsolete method that enables a retrying execution strategy if one wasn't configured (I don't remember what we decided to name this)