Function are_plugins_loaded

src/python/python_runtime.cpp:643–643

    void mark_plugins_loaded() { g_plugins_loaded.store(true, std::memory_order_release); }
    bool are_plugins_loaded() { return g_plugins_loaded.load(std::memory_order_acquire); }

    void set_imgui_context(void* ctx) {
        g_imgui_context = ctx;