Add stuff for image search

[hwkr]

• Set up timeout for input field
• Improve error handling and fetch call

[hwkr]

Two main changes,

• Tweaked the colors in the header

• Changed how the image field works including adding error states

[hwkr]

• Added a back button to sign up for @Inschato

[bndnio]

Looks great! You're clear to merge on my end 👍