Encryption: Add support for multiple data keys per day (#47765)

* Add database migrations

* Use short uids as data key ids

* Add support for manual data key rotation

* Fix duplicated mutex unlocks

* Fix migration

* Manage current data keys per name

* Adjust key re-encryption and test

* Modify rename column migration for MySQL compatibility

* Refactor secrets manager and data keys cache

* Multiple o11y adjustments

* Fix stats query

* Apply suggestions from code review

Co-authored-by: Tania <yalyna.ts@gmail.com>

* Fix linter

* Docs: Rotate data encryption keys API endpoint

Co-authored-by: Tania <yalyna.ts@gmail.com>

pkg/api/admin_encryption.go

@@ -0,0 +1,16 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/grafana/grafana/pkg/api/response"
+	"github.com/grafana/grafana/pkg/models"
+)
+
+func (hs *HTTPServer) AdminRotateDataEncryptionKeys(c *models.ReqContext) response.Response {
+	if err := hs.SecretsService.RotateDataKeys(c.Req.Context()); err != nil {
+		return response.Error(http.StatusInternalServerError, "Failed to rotate data key", err)
+	}
+
+	return response.Respond(http.StatusNoContent, "")
+}