[Improvement]: Submit .gitignore template to gitignore.io

[cancan101]

Improvement description

I suggest submitting the recommended .gitignore template to gitignore.io through: https://github.com/toptal/gitignore.

At present the docs suggest getting a template / sample from: https://github.com/pimcore/demo/blob/11.x/.gitignore. However, there is some value to submitting to the generator as it can be used to create a .gitignore file that can include multiple frameworks and / or IDEs and / or OS'.

[github-actions]

Thanks a lot for reporting the issue. We did not consider the issue as "Pimcore:Priority", "Pimcore:ToDo" or "Pimcore:Backlog", so we're not going to work on that anytime soon. Please create a pull request to fix the issue if this is a bug report. We'll then review it as quickly as possible. If you're interested in contributing a feature, please contact us first here before creating a pull request. We'll then decide whether we'd accept it or not. Thanks for your understanding.