Add permission for permissions

scm-core/src/main/java/sonia/scm/security/Permission.java

@@ -0,0 +1,12 @@
+package sonia.scm.security;
+
+import com.github.sdorra.ssp.PermissionObject;
+import com.github.sdorra.ssp.StaticPermissions;
+
+@StaticPermissions(
+  value = "permission",
+  permissions = {},
+  globalPermissions = {"list", "assign"}
+)
+public interface Permission extends PermissionObject {
+}