fix(notes): add queries and mutations

[marcin-kozinski]

Finish NotesRepository by backing it with real queries and mutations sent to the graph (via the sync engine) and an in memory cache, so we can create/update/delete/open locally without requiring a full data refresh, complete with pagination.

References

• https://mozilla-hub.atlassian.net/browse/POCKET-10885

PR Checklist

Setup:

• Described changes for automated release notes in PR title using
  Conventional Commits standard
• Self Review (review, clean up, documentation)
• Basic Self QA
• Feature flagged as needed to ensure this specific code is beta and production ready

Review:

• Code Review approved
• If modified GraphQL spec or queries, checked the usage file for invalid or no longer used definitions and cleaned it up if necessary

[nzeltzer]

lgtm