updated requiremnts.txt

Merge branch 'main' of https://github.com/Astromis/textfab into main

changed version; added pandas

#13 fixed param

#16 added type conversion

#18 renamed func

#14 added saving to config method

#19 added import of custom units

added installation section

add reqs inside setup

readme updated

added object adding to the config

blakced tests and src; changed the type annot in bases

added augmentations

added detokenize units; tests fixed