text: Title: mouse.wait_for_click should have a return code like the keyboard counterpart
  Body: ## Classification:
  
  Feature (New)
  
  ## Reproducibility:
  
  Always
  
  ## Version
  
  AutoKey version: 0.95.10
  
  Used GUI (Gtk, Qt, or both): Gtk (Gnome) 
  
  Installed via: (PPA, pip3, …). Honestly can't remember.
  
  Linux Distribution: Ubuntu 20.04
  
  ## Summary
  
  `mouse.wait_for_click` does not have a return code so there is no way to know if it was clicked or if it timed out.
  
  ## Steps to Reproduce (if applicable)
  
  - grab return value from `mouse.wait_for_click()`
  - log the return value, it is always `None`
  
  ## Expected Results
  
  - similar to `keyboard.wait_...` it should have a return code.
  
  ## Actual Results
  
  - always return `None`