Create Notifications Page

[HazelYuAhiru]

Description

Created a notification page for invoices.

Screenshots/Media

Issues

Closes #60

[theNatePi]

Good work guys, the page looks great so far!
Here are a couple of things to fix:

• The near due notifications should only be those in which the event is in the next week
  • Any events with is_sent = True should be ignored
• Try to match the font to the design
• Date filtering only works if you also click one of the buttons under right after, however, it should work after a date field is updated. Trying using a date picker input and updating the page when the input values changes
• Filter should update when changed
• The Notifications page should go inside of the Navbar, not inside of a flexbox with the Navbar. See the Playgorund.jsx file

Lmk if you guys need any clarifications!
@Xire7 @HazelYuAhiru

[theNatePi]

Changes requested

[theNatePi]

Additional modifications:

• Fixed font. All references to "Inter" needed to be "Inter, sans-serif"
• Eventually we will need to implement a date picker, but we will leave this out

[theNatePi]

LGTM