添加解析 .Xresources 文件配置功能

src/include/xcb.h

@@ -32,3 +32,7 @@ window_list_t *scan_window_list(void);
 void free_window_list(window_list_t *window_list);
 void start_xcb_event_loop(void);
 void clean_xcb(void);
+
+bool get_xresource_uint32(const char *name, uint32_t *value);
+void get_xresource_string(const char *name, char **value, const char *fallback);
+void clean_xresource(void);