[Java][APIView] Support for cross-language definitions in Java APIView output

[JonathanGiles]

As well as some minor cleanups.

Note: This may not be how the final approach is handled, but I didn't want this code to bit-rot on my machine, and there is no harm in having this code in APIView Java parser for the time being.

[maririos]

FYI @chidozieononiwu

[JonathanGiles]

@chidozieononiwu Please review and merge as appropriate. Thanks.

[github-actions]

Hi @JonathanGiles. Thank you for your interest in helping to improve the Azure SDK experience and for your contribution. We've noticed that there hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by pushing some changes or leaving a comment. Otherwise, we'll close this out in 7 days.

[JonathanGiles]

Do not close. This is still waiting for @chidozieononiwu to review.

[github-actions]

Hi @JonathanGiles. Thank you for your interest in helping to improve the Azure SDK experience and for your contribution. We've noticed that there hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by pushing some changes or leaving a comment. Otherwise, we'll close this out in 7 days.