Fix bugs and add documentation

Adds some fixes and docstrings.

Features

• achieve reuse compliance (ae7619e)
• add black linter (400ede4)
• add CI job for reuse linter (c71323d)
• add poetry support (a886234)
• add support for conventional changelog (1fbc978)
• adds endpoint for listing surveys (1a66eaa)

Bug Fixes

• create missing hermes.toml (1d2666a)
• look in correct directory for existing software (199703a)
• return HTTP Response instead of JSONResponse (de8b796)
• return status string instead of int (e2fcf59)
• strip .git from repository name (2934702)
• look in correct directory for existing software (3815b01)
• return HTTP Response instead of JSONResponse (f5a4079)
• return status string instead of int (5aa4dba)
• strip .git from repository name (fb38c64)