Update homescreen UI and add NFT Button

[navi-arneja]

Updating the home screen UI will make the new NFT feature that we integrated more accessible to new users. All functionality will stay the same.

Design: https://www.figma.com/file/6BiwV9GBJvtf9II8LUzd49?node-id=34:2#97136342

Delta from current design:

1. Gradient yellow instead of solid yellow
2. Added a third NFT button and made the overall size of them smaller
3. Removed the rounded bottom sheet