Move unused analysis functions (#246)

* * use pathlib module for file paths
* send in packing config data directly to analysis

* Process arguments inside `doloop` function

* Remove unused functions

* Remove unnecessary imports from Analysis.py

* Remove unused functions and add documentation

* Refactor point chunking in MeshStore.py

* organize imports

* Move over functions from Analysis.py

* move imports to the top

* format

* remove unused functions from utils

* remove unused attributes from analysis class