Parse groovy files with the parseCppSymbols() - same as Java

Motivation

I would like to have Symbols for my groovy files, but file type groovy is not supported:

What I found out is that if I rename my file from cfn.groovy to cfn.java the symbol viewer works just flawlessly:

Status

This is more like a feature request. I currently struggle to compile Kate from the source so that I can actually prove that this change will work. As this is only one line copy/paste change I assume it should.

RFC

In your opinion could this change work (flawless is probably way too optimistic)? Can someone help me to verify the change?