Add .editorconfig to settings workspaces

[jan-vcapgemini]

As an IDEasy user I expect intellij to automatically install an .editorconfig (for our code reformattings) into my workspace.

At the moment we've already added the .editorconfig to our project root in git.
For projects that do not follow such best-practice, we still need the settings to automatically install it to the current workspace.

See #735 for a clean solution of the approach.

See: #465 for reference