Document where to report errors with each component

[lidel]

TBD, maybe just drop seciton in readme?

So fer:

• Gateway Specs: https://github.com/ipfs/specs/
• Gateway Implementation errors: https://github.com/ipfs/go-libipfs/
• Saturn errors:
  • L1 errors: https://github.com/filecoin-saturn/L1-node
  • Orch errors: https://github.com/filecoin-saturn/orchestrator
  • Log reporting errors: https://github.com/filecoin-saturn/log-ingestor (