Add generics angle brackets highlighting for Java

[TheMarvelFan]

Referencing issue #5024
I made the required changes to the source code by-
Adding angle brackets in the PAIRS array in JavaBracesMatcher class
Adding angle brackets in Grammar1.nbs so that it can be read as a map key-value pair by other classes
But when I test these changes (building with ant), the code is still not angle to highlight matching pairs in yellow like it is supposed to. Instead, it highlights only the selected bracket (on which caret is placed) in red
(for images refer to Discussion #6497)
I have checked and double checked, and I know I am missing something, but I can't put my finger on it. I know I can do it if someone points me in the right direction. So, I am opening this pull request, so that I can get some guidance as to what I am missing out on. It would be much appreciated.

[Chris2011]

@TheMarvelFan hey, what is the progress here? Did you try the advice from matthiasblaesing in the original ticket? Maybe it is easy as hell :)

[TheMarvelFan]

Hi @Chris2011,
I am currently involved in multiple projects, so the progress will be a bit slower than expected. And yes I tried to incorporate the solution provided by matthiasblaesing and it works, but a few finishing touches are left.

[Chris2011]

Ok good to here. It would be good if you can just push your changes that we can also have a look and maybe also help here :)

[Chris2011]

Hey, thx for your commits. I know it is still a draft and I'm fine for formatting stuff if we all use the same formatting settings but I guess this is to much for this PR. Can you please reduce the noise of your PR, the formatting stuff? It is not necessary for this PR and makes harder to read it :)

[TheMarvelFan]

Hi @Chris2011
I apologize for any inconvenience I might have caused. When I started contributing to this project, it was my first ever contribution and I was not aware of the noise I might cause when I opened the PR. I will rebase as soon as the feature is added perfectly, and I will try to maintain a lower number of commits in the future.

[Chris2011]

No problem, there are a lot of solutions :) You can create a new, clean branch from master and just cherry-pick a specific commit or jsut copy your exact changes. And it was just a hint about the noise, so no problem and worries at all. We appreciate your contribution :)