[bos #42003][EDF] (2024) Shortcuts improvements

[bos #42003][EDF] (2024) Shortcuts improvements

Multiple changes:
    0) Add possibility to nest action into folders or folder-actions. Show shortcuts of different modules in separate tab;
    1) Make undo/redo action meta-actions;
    2) Add default icons;
    3) Style descendant folders if ascendant key sequence is modified;
       Highlight tab if key sequence of a shortcut in a module is modified;
    4) Show tooltips in Shortcut Editor;
    5) Adjust column widths in Shortcut Editor;
    6) Add search in Shortcut Editor;
    7) Make logging clearer;
    8) Add SUIT_ShortcutMgr::createAction(..);
    9) Update doc;
    10) Methods, which retrieve action assets, look into root module asset file if the action is meta-action;
    11) Since action IDs were changed (at least they were prepended with folder IDs),
           but old IDs remain in user preference files, there were conflicts;
           To avoid this, name of shortcut section was appended with version of shortcut mgr;
    12) Allow "Del" key to be set in Shortcut Editor.