feat: add support for aurelia 2 project detection

[CollinHerber]

Sorry if there is things missing, bad, etc. This is my first ever intellij plugin and I also have not written any Java/Kotlin in 10+ years.

This changes the following

• Removes the file name based detection for telling if aurelia is present
• Add dependency based detection. (aurelia-cli = v1 , aurelia = v2)
• Adds contribution documentation to satisfy https://github.com/denofevil/AureliaStorm/issues/41

Adds support for the following

• switch and case binding
• ref is considered a valid attribute

I have confirmed this working on an aurelia 1 and aurelia 2 project. If I'm not mistaken these are the correct dependencies to check for.

[CollinHerber]

Can we get some traction on this?

[anstarovoyt]

sorry, I wrote a comment in May but looks like I didn't submit it as a part of review 🤦