Use ancestors to determine test framework in code lens

[vinistock]

Depends on #1333

We currently try to determine the test framework based on dependencies. This is an okay approach, but once we have ancestors available we can be a lot more accurate.

We can check if a test inherits from Minitest::Test or Test::Unit::TestCase and then decide based on that - ideally with a fallback if we can't determine the framework for whatever reason.

[andyw8]

That would be great.

[github-actions]

This issue is being marked as stale because there was no activity in the last 2 months

[amomchilov]

As a note, when we implement this, we should look for extend ActiveSupport::Testing::Declarative instead of < ActiveSupport::TestCase.

That would let us support users who want to support the declarative syntax of AS::TC, who don't wish to use the whole thing.

[jmarsh24]

+1 This would be a great feature!