AccessControl: Add metadata to search result (#48879)

* Add access control metadata to search hits if access control query string is passed

pkg/services/accesscontrol/accesscontrol.go

@@ -213,6 +213,20 @@ func GetResourcesMetadata(ctx context.Context, permissions map[string][]string,
 	return result
 }
 
+// MergeMeta will merge actions matching prefix of second metadata into first
+func MergeMeta(prefix string, first Metadata, second Metadata) Metadata {
+	if first == nil {
+		first = Metadata{}
+	}
+
+	for key := range second {
+		if strings.HasPrefix(key, prefix) {
+			first[key] = true
+		}
+	}
+	return first
+}
+
 func ManagedUserRoleName(userID int64) string {
 	return fmt.Sprintf("managed:users:%d:permissions", userID)
 }