Is your feature request related to a problem? Please describe.
The new-style imports (based on depositing files in an external storage and registering the case as phenopackets) is currently unsupported in VarFish.

Describe the solution you'd like
Implement the import.

• implement parsing of per-project TOML configuration
• implement varfish-cli projects project-load-config PROJECT_UUID (see below)
• implement validating phenopackets YAML files
• implement submission of phenopackets YAML files

Describe alternatives you've considered
N/A

Additional context
N/A