Bitmask should accept --help, --verbose and --debug

bitmask should react to these flags. At the moment, none of these flags seem to make a difference:

(venv-gui) --- git/bitmask-dev ‹master* ⁇› » bitmask --debug 
WARNING:vext:Could not add extra path: /usr/share/sip
CANNOT LOAD PIXELATED!...............
No module named pixelated.adapter.mailstore
[+] launching bitmaskd...
[bitmask] terminating bitmaskd...
[bitmask] shutting down gui...

(venv-gui) --- git/bitmask-dev ‹master* ⁇› » bitmask --verbose
WARNING:vext:Could not add extra path: /usr/share/sip
CANNOT LOAD PIXELATED!...............
No module named pixelated.adapter.mailstore
[+] launching bitmaskd...
[bitmask] terminating bitmaskd...
[bitmask] shutting down gui...

(venv-gui) --- git/bitmask-dev ‹master* ⁇› » bitmask --help   
WARNING:vext:Could not add extra path: /usr/share/sip
CANNOT LOAD PIXELATED!...............
No module named pixelated.adapter.mailstore
[+] launching bitmaskd...
[bitmask] terminating bitmaskd...
[bitmask] shutting down gui...