* refactor: rename structs
* chore: read database id from view
* chore: fix open database error because of create a database view for database id
* chore: fix tests
* chore: rename datbase id to view id in flutter
* refactor: move grid and board to database view folder
* refactor: rename functions
* refactor: move calender to datbase view folder
* refactor: rename app_flowy to appflowy_flutter
* chore: reanming
* chore: fix freeze gen
* chore: remove todos
* refactor: view process events
* chore: add link database test
* chore: just open view if there is opened database
* chore: write snapshot
* chore: add tests
* chore: sync close
* chore: restore from snapshot
* chore: delete invalid revisions after restored from snapshot
* chore: create default view if it fail to deserialize view's revisions when there is no snapshot
* chore: auto generate snapshot
Co-authored-by: nathan <nathan@appflowy.io>
