Commands framework: improve arg resolution #171
Description
the arg resolution needs some improvements
- allow resolving args of more types through a menu (like maps, logic is ready in nextmap overhaul #162)
- resolve ambiguous args through a menu (eg typing "abc" for a player)
- use a more intelligent search algorithm than .contains() to process "analyst" as "map analyst", not "chief map analyst"
- optional: some way to filter args, eg to make /free menu only show freeable players and make /ban menu not include admins