feat: image search

[aleksasiriski]

Closes #119

Demo: https://feat-image-search.hearchco-frontend.pages.dev

Image search is now a category inside /search route that has a different rendering of UI

Images:

• Searching images and proper rendering of UI
  • Needs feat: image search agent#226)
• Buttons for picking the category alongside bangs!
• Nice loading animation for images
  • Random widths
• Preview when clicking on images
• Good mobile UI/UX
  • Dark theme toggle
  • Images & Image preview
• Proxy for loading images to increase user privacy
  • Needs feat(router)!: switch to go-chi and add image proxy agent#260

General & Images:

• Minimum delay for loading animation (500ms)
• New requests for additional pages / results
  • Needs feat(engines): start page option agent#238
  • General results should have pages numbers at the bottom
  • Image results should have "Show more" button to load new images and attach them to the previous ones
• Dark theme toggle
• Rename env from API_URL to API_URI, and added trailing / detection
• Properly present backend errors on frontend (w/o crashing)
• Read start/pages param from URL and put into variable

Refactor:

• Better folder structure
• Consistent order of imports with comments for clarity
• Svelte formatter applied everywhere
• Moved some code into separate files (components, functions, types)
• Moved primary and secondary colors to tailwindcss config

Dismissed review as it was not intended to be approved yet.