Desktop: Accessibility: Add "Move to" context menu action for notebooks

[personalizedrefrigerator]

Summary

This pull request allows changing the parent of a notebook from its context menu. Previously, it seems to have not been possible to change a folder's parent without a mouse.

This pull request modifies the existing moveToFolder command — it now supports changing the parent notebook of notebooks in addition to notes.

Note: A similar feature was originally requested on the forum.

Related to #10795.

Related WCAG guidelines

• §2.1.1: Keyboard: "All functionality of the content is operable through a keyboard interface".
  • On my (Linux) computer, this can be done with the "context menu" key or by pressing shift-F10.

Screenshots

Testing plan

Manual testing (Fedora 40):

1. Right-click on a subfolder.
2. Click "Move to notebook".
3. Verify that the right-clicked notebook's title is not in the list of possible notebooks.
4. Select "None".
5. Verify that the notebook is now toplevel.
6. Right-click on the folder.
7. Click "Move to notebook".
8. Select an existing folder.
9. Verify that the folder has been added as a subnotebook of the folder selected in step 8.

Manual regression testing (Fedora 40):

1. Open the command palette and run :moveToFolder.
2. Select a not-currently-selected notebook.
3. Verify that the note has been moved to that notebook.
4. Select multiple notes.
5. Click "Move to notebook".
6. Select a not-currently-selected notebook.
7. Verify that the notes have been moved to that notebook.

[tomasz1986]

Thank you very much for implementing this! Although the issue is about keyboard usage, this will also make it possible to move notebooks on a touch screen (desktop) device, which is currently impossible.