Gradle Groovy Application/Library Project Creation Wizards

[lkishalmi]

This one depends on #7257 and has to be rebased on that once merged.

Though it is just a low hanging fruit to add Groovy project creation.

[lkishalmi]

Should the category be "Groovy with Gradle"?

[mbien]

Should the category be "Groovy with Gradle"?

would make sense I think.

[lkishalmi]

[mbien]

seems to work. Although on first attempt it didn't seem to work. Since the wizard doesn't check if the project already exists, so I created a new groovy project but it opened the existing gradle project I had in /tmp and i was confused why it made a java project :)