Add classification and document stuff along the way

[lquenti]

• [x] add path arg to config
• [x] parse arg via argp
• [x] parse arg via config
• [x] read and parse csv file
• [x] create classification structs based on csv file
• [x] Check if it works with InfluxDB

documentation

• [ ] ~docstring everything~
• [x] Create human readable documentation

Other stuff I found along the way

• [x] Fix documentation on how to use a config
• [x] Some bug, see the bug emoji

[lquenti]

After writing the full text documentation, the docstrings were basically just noise that explained easily readable stuff. Not worth the extra time.