Create User Login Page

[StruckCroissant]

Summary

Need to make an Vue3 component that handles user login.

Wireframe

Acceptance Criteria

1. Normal functionality
   1. User's can login and is automatically redirected to the landing page (this doesn't need to be developed yet; can go to an empty page)
2. Error handling
   1. Username and password must be required
   2. Serverside error messages should go through the toast component
   3. Validation errors should be consumed by the Vee validate custom inputs
3. There is a test case for the above criteria. (dependent on #58)

[StruckCroissant]

Login page is already implemented. It just sucks. Can close with #40