Handle different config references by default

[dekelpilli]

This is for showing uses across a project. Example syntaxes I'm familiar with:

• {{}} and ${} for Camel
• ${} and #{} for Spring

For example:
This works
This doesn't work

[ghik]

I agree that this would be useful, but I think this is out of scope of the HOCON plugin. Since we are dealing with Camel/Spring-specifix syntax, this should be provided by plugins supporting these frameworks (or perhaps specialized separate plugins which integrate Camel/Spring with HOCON).

[dekelpilli]

That's fair. I didn't mean to suggest that this plugin would try to detect the presence of these frameworks and their valid use cases, but maybe just assume that config surrounded by any {} anywhere match. It could give a few false positives, but that's probably better than mostly false negatives.