This allows removing it from `class_db.h`, significantly reducing the amount of files
that include it transitively.
Also includes some include cleanup in `control.h` and `rich_text_label.h` done while
ensure they don't depend on `callable_mp`.
Add monospace font styling to more items in signal workflow
Use monospace font in method and property selection dialogs
Use monospaced font in Animation editor
Add editor setting
Additional fixes and things
Add documentation to editor setting
# Conflicts:
# editor/inspector/property_selector.cpp
Update doc/classes/EditorSettings.xml
Co-authored-by: A Thousand Ships <96648715+AThousandShips@users.noreply.github.com>