Added parcel mode outputs, improved docs, improved samir parame tests, minor corrections and changes.

Some optimization improvements. Potential memory leaks to look at. Many improvements in the preprocessing scripts, almost finished the parcel mode. New scripts in the prostprocessing directory. Changes in the samir parameter handling.

Added more input preparation functions for parcel mode, started writing a global input preparation script. Reused script from modspa for config file.

Finished ndvi extraction scripts. Added parcel mode to weather scripts. Wrote script to convert dataframes into xarray datasets for parcel mode.

Started working on modspa parcel mode. Rewrote pre-modspa functions for better integration to modspa pixel. Improved efficiency and simplicity at the same time.

optimised input reading and output writing, increased calculation speed by more than 10 on small datasets.

Fixed equations, deleted some temporary variables to reduce memory usage, used eval() function to improve readability.

Calculation of ndvi cube and weather cube operational. Starting the samir params handling and time loop architecture