feat(gui): 迁移图形界面库从SDL3到IUP

- 移除SDL3依赖，引入IUP图形界面库
- 更新Makefile以支持IUP编译配置
- 重构GUI模块，移除SDL相关代码
- 更新全局变量和类型定义，移除SDL依赖
- 添加IUP头文件到项目库目录
- 删除手动帧率控制(SDL_Delay)，依赖IUP事件循环
- 更新编译脚本和文档说明

libs/iup-3.31_Win64_dllw6_lib/include/iupglcontrols.h

@@ -0,0 +1,47 @@
+/** \file
+ * \brief GL Controls.
+ *
+ * See Copyright Notice in "iup.h"
+ */
+ 
+#ifndef __IUPGLCONTROLS_H 
+#define __IUPGLCONTROLS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+int  IupGLControlsOpen(void);
+
+Ihandle* IupGLCanvasBoxv(Ihandle** children);
+Ihandle* IupGLCanvasBox(Ihandle* child, ...);
+
+Ihandle* IupGLSubCanvas(void);
+
+Ihandle* IupGLLabel(const char* title);
+Ihandle* IupGLSeparator(void);
+Ihandle* IupGLButton(const char* title);
+Ihandle* IupGLToggle(const char* title);
+Ihandle* IupGLLink(const char *url, const char * title);
+Ihandle* IupGLProgressBar(void);
+Ihandle* IupGLVal(void);
+Ihandle* IupGLFrame(Ihandle* child);
+Ihandle* IupGLExpander(Ihandle* child);
+Ihandle* IupGLScrollBox(Ihandle* child);
+Ihandle* IupGLSizeBox(Ihandle* child);
+Ihandle* IupGLText(void);
+
+
+/* Utilities */
+void IupGLDrawImage(Ihandle* ih, const char* name, int x, int y, int active);
+void IupGLDrawText(Ihandle* ih, const char* str, int len, int x, int y);
+void IupGLDrawGetTextSize(Ihandle* ih, const char* str, int *w, int *h);
+void IupGLDrawGetImageInfo(const char* name, int *w, int *h, int *bpp);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif