Resolves #11

• Batch datum fetching
  • See 37aa71b
• Parellelize metadata fetching
  • See 46b6ff2
• Need to consider that the blockfrost api rate limiting might be hit
  • If we're just doing a POC with <500 images it should be fine for now
  • Added some basic handling, but if we get to the point of hitting the limitting we should probably refactor to use something like pagination
  • See dabfb1b
• Remove unnecessary double parsing of blockfrost responses
  • See 3a18d29
• Test: same NFTs shown on page in same order (no regression)
• Speed up utxo fetching
  • Moved to Speed up Utxo fetching #14
• Don't list all NFTs for the individual item pages
  • Update: listing all NFTs only happens when the item page is opened directly (not through the home page), or it is reloaded
  • See Implement contract for fetching a single NFT #16
• Implement pagination
  • Moved to Implement pagination for NFT listing #15

Times to load page:

• Original time to show images: ~55 seconds
• After batching datum fetching: ~40 seconds
• After parallelizing metadata fetching + batching datum fetching: ~20 seconds
  • Today (July 7th) utxosAt was faster, only ~5 seconds, page load was ~10 seconds
  • Today (July 8th) utxosAt was back to ~15 seconds