chore: permission types

[kyle-ssg]

Thanks for submitting a PR! Please check the boxes below:

• I have added information to docs/ if required so people know about the feature!
• I have filled in the "Changes" section below?
• I have filled in the "How did you test this code" section below?
• I have used a Conventional Commit title for this Pull Request

Changes

• Migrates all permissions to enums
• Fixes <Permission regression from https://github.com/Flagsmith/flagsmith/pull/6361/files#diff-c404e143ddf169ce55cfafbe7bec0c1c67aa2f20e509c786f25a040faeabf7b9R169 - seems to be rendering all permissions without project names as project level descriptions
• Fixes a few incorrect / inconsistent permission descriptions
• Fixes permission check editing a feature on identity page
• Bumps typescript version, npm run typecheck was just returning node_modules errors

How did you test this code?

E2E, checking each usage of permission

Note: due to amount of refactoring I've done, I've pointed this to the latest branch I've been working on

[kyle-ssg]

Ok! all refactored and no typescript errors exist that relate to permissions