Add version method

skeleton/MODULE.cpp

@@ -9,12 +9,17 @@ class {MODULE} : public ScreensaverPlugin {
         int fps() const override;
         void update() override;
         void render() override;
+        std::string version() const override;
 };
 
 ScreensaverPlugin* create_instance() {
     return new {MODULE};
 }
 
+std::string {MODULE}::version() const {
+    return "1.0.0";
+}
+
 int {MODULE}::fps() const {
     return 30;
 }