env_setup.md

Python environment setup details:

We will need 4 environemnts to work with all the functionalities of this code:

1. Nequip and Allegro - name : neq_alg

2. Mace and Botnet - name : ma_bo

3. Equiformer - name : eqf

4. Torchmdnet: tmd

See details to how create them in their respective folders