* feat(annotations): storage service
* feat: stickers are in db as array
* chore: fix some unintended diffs
* fix: fixes from review
* fix: specific table name for json_each
* fix: update primary keys and constraints
* fix: fix schema
* feat: stream name updates are reflected in annotations via FK
* feat: new metadata backup endpoint
* feat: added restore/sql API endpoint
* fix: content-type is multipart/mixed, part names are kv and sql
* fix: changed multipart manifest to buckets and made it .json
* feat: added lock for backing up sqlite and bolt dbs
* fix: use read lock instead of write lock on kv during backup
* fix: use filepath.Join for temp dirs
William Baker