Issue 1 create landing page

[kaojb-bass]

Change Summary

Added sign up/register form
Added login
Tasks page now requires authentication, users are restricted to their task view only
(Very unfinshed) landing page and nav bar

Change Form

Changes to backend views and urls and tasks page, index is now landing page, all other changes are new files

Other Information

Task CRUD operations need checking

[Precipicee]

It looks mostly good!

A couple of things I wanted to address, however:

• On the first page, it only has a sign-up button (no login button).
• The ID literally doesn't matter in the URL now, so I think it should just be deleted.
• The navbar doesn't seem to have the links working properly
• I haven't tried signing up yet, but logging in seems to work well.
• I think we need to merge it with the current issue-7 branch to test stuff? I'm okay with merging this into main to test though - clearly some stuff is outdated.

Finally, comments about the merge conflicts:

• The one with focus.tsx may just be that you used an outdated version of @TobbleCobble 's page - if u could discuss this with him quickly it should be easy to resolve?
• The index.tsx one seems to just be you changing the page from the original ping-pong to an "actual" landing page - so that should be a simple fix :)