Support for common editors

[mzizzi]

How about trying to flesh this repository out with a few more grammars that support common editors? Having a few solid grammars for common editors in this repository might help aenea/dragonly newbies ease into development.

I hacked up an Intellij IDEA grammar this week and am open to tidying it up if we think it's worth the effort.

https://github.com/mzizzi/aenea-grammars/blob/mzizzi/_idea/_idea.py