Add support for project manipulation

[holtgrewe]

Is your feature request related to a problem? Please describe.
Once, there is sodar-core-cli (cf. bihealth/sodar-cli#4) we should add support to project manipulation (and others?) to varfish-cli

Describe the solution you'd like
Once there is sodar-core-cli we should give users access to project manipulation via REST API using varfish-cli.

Describe alternatives you've considered
N/A

Additional context
N/A