refactor all common parts and games

common/platform/netenv.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <windows.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "platform/nusec.h"
+
+struct netenv_config {
+    bool enable;
+    uint8_t addr_suffix;
+    uint8_t router_suffix;
+    uint8_t mac_addr[6];
+};
+
+HRESULT netenv_hook_init(
+        const struct netenv_config *cfg,
+        const struct nusec_config *kc_cfg);
+