K8s/Dashboards: Generate Dashboards k8s APIs using Grafana App SDK (#99966)

* Generate Dashboard kinds with `grafana-app-sdk`

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Hack together a fix for invalid TS codegen for v0 & v1

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Address Go linter issues

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Address TS linter issues

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Add new app to CODEOWNERS

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Fix a couple of issues detected by tests

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Update OpenAPI definitions and test files

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Remove title from Dashboard v1alpha1 spec

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Remove unused CUE schemas

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* remove unrelated files

* allow any in the generated betterer

* Add a comment explaining why we don't use deepcopy-gen

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Default to v2alpha1 if dashboards v2 FF is enabled

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

---------

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>
Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

public/openapi3.json

@@ -3118,6 +3118,7 @@
         "type": "object"
       },
       "AnnotationActions": {
+        "description": "+k8s:deepcopy-gen=true",
         "properties": {
           "canAdd": {
             "type": "boolean"
@@ -3192,6 +3193,7 @@
         "type": "object"
       },
       "AnnotationPermission": {
+        "description": "+k8s:deepcopy-gen=true",
         "properties": {
           "dashboard": {
             "$ref": "#/components/schemas/AnnotationActions"