improvement: allow specifying multi-column foreign keys

[rbino]

• improvement: add match_with option on references
• improvement: add match_type option on references

Submitting this as a draft to get some early feedback given it's my first contribution.

What still needs to be done:

• Handle the case where with has to be added both due to multitenancy and because it's explicitly defined
• Cover those cases with tests
• Add tests for the Transformer check
• Polymorphic variants of this (I'd be more inclined to leave this to a separate PR probably)

[zachdaniel]

Looks great! 👍

[rbino]

@zachdaniel if the polymorphic variants can be implemented in a separate PR this should be ready for review

[zachdaniel]

Looks like some tasks to run:

mix spark.formatter
mix spark.cheat_sheets

as well as a credo check to resolve.

[rbino]

Fixed all three things

[zachdaniel]

🚀 Thank you for your contribution! 🚀