core: runtime 接管用户配置模块句柄

src/core/runtime.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <stddef.h>
+
 #include "core/backend.h"
 #include "core/layout.h"
 #include "core/state.h"
@@ -12,6 +14,7 @@ typedef struct runtime_init_desc_t {
   layout_registry_t layouts;
   workspace_desc_t *workspaces;
   size_t workspace_count;
+  void *config_module_handle;
 } runtime_init_desc_t;
 
 typedef struct runtime_t {
@@ -21,6 +24,7 @@ typedef struct runtime_t {
   state_t state;
   layout_registry_t layouts;
   backend_t *backend;
+  void *config_module_handle;
 } runtime_t;
 
 bool runtime_init(runtime_t *runtime, runtime_init_desc_t *desc);