move the old stuff to a separate directory

...e/old/Difference between myEels2.f90 and MyEels3.f90 .txt

...e/old/Difference between myEels3.f90 and myEels4.f90 .txt

Python code/old/HREELS.py

Python code/old/README.md

Python code/old/__init__.py

Python code/old/calcHREELS kms?.py

Python code/old/calcHREELS20.py

Python code/old/calcHREELS3.png

Python code/old/calcHREELS4.png

Python code/old/dielectrics.py

Python code/old/myBoson.f90

Python code/old/myEels2.f90

Python code/old/myEels20.f90

Python code/old/myEels3.f90

Python code/old/myEels4.f90

Python code/old/nice_fitting_code.py

Python code/old/notes.txt

Python code/old/poetry.lock

Python code/old/pyproject.toml