Combine license matches in new LicenseDetection

[AyanSinhaMahapatra]

See #2878

Tasks

• [x] Reviewed contribution guidelines
• [x] PR is descriptively titled 📑 and links the original issue above 🔗
• [x] Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR Run tests locally to check for errors.
• [x] Commits are in uniquely-named feature branch and has no merge conflicts 📁

[AyanSinhaMahapatra]

@pombredanne @JonoYang This is ready to review!

[JonoYang]

@AyanSinhaMahapatra I'll need a little more time to review this, but I think it's looking good so far. You have some failing CI tests, maybe some other test expectations need to be updated?

[AyanSinhaMahapatra]

@pombredanne All green!

[AyanSinhaMahapatra]

@pombredanne this is all ready!