Implement API endpoints (#6915)

* Pass odo context to api server

* Get /instance

* DELETE /instance implementation

* Move describe logic to pkg/component/describe

* Get /component implementation

* POST /component/command implementation

* Fix example by replacing action with name

* Fix integration test

* Integration tests

* Add comment for PushWatcher

* Test DELETE /instance without --no-watch

* Apply suggestions from code review

Co-authored-by: Armel Soro <armel@rm3l.org>

* Return an error if not ready for push

* Fix windows tests

* Fix tests for Windows

---------

Co-authored-by: Armel Soro <armel@rm3l.org>

ododevapispec.yaml

@@ -188,7 +188,7 @@ paths:
                   enum:
                     - "push"
               example:
-                action: push
+                name: push
       responses:
         '200':
           description: command was successfully executed