Chore: Remove dashboards from models pkg (#61578)

* Copy dashboard models to dashboard pkg

* Use some models from current pkg instead of models

* Adjust api pkg

* Adjust pkg services

* Fix lint

* Chore: Remove dashboards models

* Remove dashboards from models pkg

* Fix lint in tests

* Fix lint in tests 2

* Fix for import in auth

* Remove newline

* Revert unused fix

pkg/tests/api/dashboards/api_dashboards_test.go

@@ -220,7 +220,7 @@ providers:
 				dashboardData, err := simplejson.NewJson([]byte(tc.dashboardData))
 				require.NoError(t, err)
 				buf := &bytes.Buffer{}
-				err = json.NewEncoder(buf).Encode(models.SaveDashboardCommand{
+				err = json.NewEncoder(buf).Encode(dashboards.SaveDashboardCommand{
 					Dashboard: dashboardData,
 				})
 				require.NoError(t, err)