Use fs promises

[swiftugandan]

Fixes Issue

Closes #2815 and #2640

Changes proposed

• Uses fs.promises for filesystem calls
• Adds an lru-cache to reduce the number of filesystem calls

Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [ ] My change requires changes to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] All new and existing tests passed.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

[github-actions[bot]]

Welcome @swiftugandan! Thank you so much for your first pull request!

[eddiejaoude]

@swiftugandan thank you for your contribution and efforts with this, but I am going to close this pull request as I think it needs more thought and maybe in small increment steps

[swiftugandan]

@swiftugandan thank you for your contribution and efforts with this, but I am going to close this pull request as I think it needs more thought and maybe in small increment steps

Ok