feat: change pomodoro timings

[Virginia-Watson]

Issue link

Closes #39

Description

Added change pomodoro timings to profile screen - fixed some bugs with the statistics on the profile and the garden leaderboard. Added add topics to the add subject screen and made both add subject and add event screens scrollable

Checks

• [x] The PR title starts with feat:, fix:, chore:, style:, etc.
• [x] The PR links to the given issue.
• [x] You've labelled "wip" or "needs review" to this PR.
• [x] You have moved your Issue card on the project to the appropriate location.

Any other supporting description or media with this PR

No Response

[Virginia-Watson]

In general, the PR talks about changing pomodoro timings, but I think 90% of the changes here aren't related to that.

yep (pls ignore ik) - most of it is - the rest is just small changes/bug fixes that don't deserve their own issue