feat(experimental): Issue missing case error for match expressions

[jfecher]

Description

Problem*

Resolves

Summary*

Issues a missing case(s) error for match expressions missing any cases. This includes constructing an example of a value which fails to match.

Additional Context

Limitation: if the match doesn't match on any cases such as match foo {} we don't issue a helpful error like Missing cases Foo, Bar, Baz and instead issue Missing cases: _. This could be fixed but it is the end of the week so I wanted to get this work out.

Documentation*

Check one:

• No documentation needed.
• Documentation included in this PR.
• [For Experimental Features] Documentation to be submitted in a separate PR.

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.