Update 2.2.0 Author’s guide to include new feature introduced

[yangcao77]

/area documentation

Which area this documentation change is related to?

/area api

Issue details

What mistake did you find / what is missing in the documentation?
Update 2.2.0 Author’s guide to include new feature introduced

changes I noticed need to be made:

1. main menu is missing "adding event bindings". https://devfile.io/docs/devfile/2.2.0/user-guide/authoring-devfiles/
2. all 2.2.0 doc need to update example devfile to use schemaVersion 2.2.0. (currently it's still 2.1.0)
3. command section missing apply command section,
4. missing deploy command group( https://devfile.io/docs/devfile/2.2.0/user-guide/adding-a-command-group-to-a-devfile/)
5. image component section is missing
6. Kubernetest component need to be updated with explanation on deployByDefault (default it's not deployed during startup, need to created & run deploy command)
7. container component missing example of having volume reference (? or should it be under volume component section?)
8. parent reference missing version property (recently added to support multi-version registry)