- Transferred most code from `RST_pick_GUI` into separate files.
- Fixed a minor bug in the mutual linear regression.
- Instead of a `Var`dictionary we now use the full configparser.
- Moved nested functions into dedicated sections to make things easier.
- If TDMS files are analysed, they are now first checked for size and downsampled if necessary.
- Added a few test scripts for testing code.

 - Removed redundant scripts
 - Changed conversion scripts to use `rstevaluation` for conversion.
 - Changed how filenames are generated for plots.

- Missing imports and other problems were resolved.
- Software should now work again as intended.