Restructured code

[Delinkelin]

Description

This pull request includes several housekeeping changes to improve the project structure and organization:

1. Removed unnecessary files to reduce clutter and improve maintainability.
2. Moved random Jupyter Notebook (.ipynb) files to an 'archive' folder for better organization and to separate potentially outdated or unused notebooks from active ones.
3. Restructured the index.rst file to improve documentation organization and readability.

These changes aim to streamline the project, making it easier to navigate and maintain. No functional changes were made to the codebase.

Fixes # (if applicable)

Type of change

• [x] This change requires a documentation update

How Has This Been Tested?

• [x] Verified that all necessary files are still present
• [x] Checked that the restructured index.rst file renders correctly

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

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[devansh-shah-11]

Looks good enough!