Dashboards: Add Dashboard Schema validation (2) (#103844)

* Activate schema validation and align underlying systems

* update to save as v0 if not the right schema version

* Resolve merge conflicts

* Move RequireApiErrorStatus to tests package

* Add mutation tests

* Fix lint

* Only do min version check if dashboard is v1

* Fix lint and disable provisioning test

* Revert provisioning changes

* Revert more tests and add schema test

* Reran gen

* SQL Dashboard save

* Adjust APIVERSION

* Fixed mutation test

* Add logging on downgrade

---------

Co-authored-by: Marco de Abreu <18629099+marcoabreu@users.noreply.github.com>
Co-authored-by: Stephanie Hingtgen <stephanie.hingtgen@grafana.com>

pkg/apimachinery/utils/errors.go

@@ -0,0 +1,20 @@
+package utils
+
+import (
+	"errors"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// Extract the status from an APIStatus error
+func ExtractApiErrorStatus(err error) (metav1.Status, bool) {
+	if err == nil {
+		return metav1.Status{}, false
+	}
+	if statusErr, ok := err.(apierrors.APIStatus); ok && errors.As(err, &statusErr) {
+		return statusErr.Status(), true
+	}
+
+	return metav1.Status{}, false
+}