Add bash completion for `--project-directory`
Add bash completion for `--project-directory`

Signed-off-by: Harald Albers <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@albersweb.de>

thaJeztah/compose,dnephin/compose,thaJeztah/compose,hoogenm/compose,swoopla/compose,hoogenm/compose,funkyfuture/docker-compose,schmunk42/compose,funkyfuture/docker-compose,shin-/compose,vdemeester/compose,dnephin/compose,jrabbit/compose,sdurrheimer/compose,shin-/compose,schmunk42/compose,jrabbit/compose,sdurrheimer/compose,swoopla/compose,vdemeester/compose