Support automatic refactoring when a module if moved between projects

[toinehartman]

Is your feature request related to a problem? Please describe.
I want to move a module M from project A to project B

Describe the solution you'd like
In the LSP didRenameFiles callback, check whether this rename is valid, and update all uses of the module name. Add B as a project dependency where needed.

Describe alternatives you've considered
Don't support this and warn the user instead. This is the current behaviour.