Add github action

[Laurick]

Why

I think a github action ziping the addon folder and uploading to github relases is a good feature for these reasons:

• It's cool
• Will be usefull for more badges on docs 👀
• Someone who only wants the addon dont need the examples
• Doesn't affect the asset store on godot.
• It's automatic

How

My proposal its to make a github action to make a zip with the addon folder only on "v..*" tags so in each tag a version will be realeases with that versioning

[rothiotome]

I think it's a great idea, specially because of the opportunity of adding new badges, of course.

Do you have a template we can use? Feel free to do a PR if you have any

[Laurick]

Yeah, it's only one file. Will do

[rothiotome]

Added access token and merged