Action discovery includes hidden directories

[davidferlay]

Observed

• Launchr discover and list actions that lives in a hidden directory like .compose :

➜ ag -g bump-related -a
platform/actions/bump-related/
.compose/build/platform/actions/bump-related/

➜ launchr discover
platform:bump-related
compose.build.platform:bump-related

Expected

• By default, launchr should not list actions defined in hidden direcotries
• An option could be added to launchr discover to find actions defined in hidden directories, in case user does need it

[iignatevich]

#16