Add mjs_getPluginAttributes.

PiperOrigin-RevId: 752691116
Change-Id: Ib503a99f8d10661b8bf92410ccf471420f924986

src/user/user_api.cc

@@ -1302,6 +1302,14 @@ void mjs_setPluginAttributes(mjsPlugin* plugin, void* attributes) {
 
 
 
+// get plugin attributes
+const void* mjs_getPluginAttributes(const mjsPlugin* plugin) {
+  mjCPlugin* pluginC = static_cast<mjCPlugin*>(plugin->element);
+  return &pluginC->config_attribs;
+}
+
+
+
 // -------------------------- GLOBAL ASSET CACHE -------------------------------
 
 void mj_setCacheSize(mjCache cache, std::size_t size) {

src/user/user_api.h

@@ -352,6 +352,9 @@ MJAPI const char* mjs_getString(const mjString* source);
 // Get double array contents and optionally its size.
 MJAPI const double* mjs_getDouble(const mjDoubleVec* source, int* size);
 
+// Get plugin attributes.
+MJAPI const void* mjs_getPluginAttributes(const mjsPlugin* plugin);
+
 
 //---------------------------------- Other utilities -----------------------------------------------