feat(front): Save and restore path when logging in

[GordiNoki]

Redirects user back to the path they were at when logging in. This was partially implemented in AuthGuard before, but didn't work well since AuthGuard only works on paths that require authentication.

Checks

• !! DONT IGNORE ME !! I have ran nx run db:create-migration <name> and committed the migration if I've made DB schema changes
• I have included/updated tests where applicable (see Testing)
• I have followed semantic commit messages e.g. feat: Add foo, chore: Update bar, etc...
• My branch has a clear history of changes that can be easy to follow when being reviewed commit-by-commit
• My branch is functionally complete; the only changes to be done will be those potentially requested in code review
• All changes requested in review have been fixuped into my original commits

[tsa96]

Ha, that's why this approach sounded so familiar - completely forgot I wrote this!