Rahul Garg

This adds shortcut categories as defined [here](https://musescore.org/en/user/3638616/blog/2022/06/01/gsoc22-global-shortcuts#:~:text=Categorizing%20shortcuts%20in%20shortcut%20preferences)  The shortcut categories are currently draft categories and may change later on. A known issue is that the opening and closing of...

Resolves: #15799 I added a small check to ensure that when the paper size is changed, it swaps the heights and widths if we are in landscape mode - [x]...