CMD: Add --recursive option for adding & detection

New semantics is as follows:

[-p <dir>] --add                 adds all games in <dir> or
                                 working dir

[-p <dir>] --detect              enumerates dectected games in
                                 <dir> with their ids

[-p <dir>] --game <id> --add     adds just game <id> if found
                                 in <dir> and not already added

[-p <dir>] --recursive --add     adds all games in <dir> and
                                 subdirs if not already added

[-p <dir>] --recursive --game <id> --add
                                 adds just game <id> if found
                                 in <dir> or its subdirs and
                                 not already added

[-p <dir>] --recursive --detect  enumerates games in <dir>
                                 and subdirs

[-p <dir>] --auto-detect         launches the first game
                                 found in <dir>

[-p <dir>] --recursive --auto-detect
                                 displays error message

The reason for the displaying an error message when attempting to do
autodetection on a whole tree is mainly one of UX, IMO it *might* get
confusing on a sufficiently large/deep tree.
The relevant if() can be removed safely if it's concluded that's not the
case.

0 files changed, 0 insertions, 0 deletions