Create install renpy sdk action

[quillcraftsman]

I've used renpy-build-action and renpy-lint-action in my project. It's good. Thanks!

In both actions first renpy sdk is installed. It's good then we use this actions separate. But this way have a side effects:

1. low speed
2. duplicated code

I propose to install renpy in the third separate action. In this way duplicated code will be removed and we can use this action separate. For example first install sdk then make lint than make build.

I will looks like:

   uses: ProjectAliceDev/renpy-install-action@master
   with:
       - some params
   uses: ProjectAliceDev/renpy-lint-action@master
   with:
       - some params
   uses: ProjectAliceDev/renpy-build-action@master
   with:
       - some params   

What do you think about it? Theoretically I can try to do refactoring myself If you will create the separate repository for new action, anyway I think it will be useful.