Template placeholder named %CLASS% for GDScript

[upizpp]

A new template placeholders named %CLASS% for GDScript has been added.
It is the class name of the script.
For example, %CLASS% in Test.gd will be replaced with Test,
so that it can be used like this:
class_name %CLASS%

[Calinou]

Thanks for opening a pull request 🙂

Pull requests should be opened against the master branch instead of 3.x (or 3.5 in your case). This is because feature development occurs in the master branch. We can then cherry-pick specific PRs to the 3.x branch if they don't break backwards compatibility.

[raulsntos]

@Calinou master already supports class name placeholders, although it uses _CLASS_ instead of %CLASS%. All other placeholders were also changed from using % to _, we'll probably want to keep using % in 3.x.

• Implemented in master as part of Improve the editor template workflow for users and devs #53957