Create a .gitignore template for viktor empty app template by default

As a Developer I want to create a .gitignore template so that it automatically ignores the python cache files from my IDE when i’m coding.

I think this is relevant for the VIKTOR platform because everytime i run viktor-cli start despite that I haven’t made any change in my app, it tracks some .pyc files. I have defined my .gitignore file to contain following yet, it always tracks app.cpython-312.pyc from __pycache__ folder. Having a template defined by default will allow me to not have to worry about version controlling unnecessary files.

Submitter proposed design (optional)

I always include following in my .gitignore file, maybe this could be a starting point:

# Python cache files