Add ImGuilistClipper struct under CIMGUI_DEFINE_ENUMS_AND_STRUCTS

* Add missing struct keywords for ImVec2 and ImGuiListClipper arguments
* Add another batch of missing struct keywords
* Add missing definition for ImDrawVert under CIMGUI_DEFINE_ENUMS_AND_STRUCTS

cimgui/cimgui.h

@@ -242,7 +242,7 @@ struct ImGuiStyle {
     struct ImVec2  WindowPadding;
     struct ImVec2  WindowMinSize;
     float          WindowRounding;
-    ImVec2         WindowTitleAlign;
+    struct ImVec2         WindowTitleAlign;
     float          ChildWindowRounding;
     struct ImVec2  FramePadding;
     float          FrameRounding;
@@ -255,7 +255,7 @@ struct ImGuiStyle {
     float          ScrollbarRounding;
     float          GrabMinSize;
     float          GrabRounding;
-    ImVec2         ButtonTextAlign;
+    struct ImVec2         ButtonTextAlign;
     struct ImVec2  DisplayWindowPadding;
     struct ImVec2  DisplaySafeAreaPadding;
     bool           AntiAliasedLines;
@@ -280,7 +280,7 @@ struct ImGuiIO {
     struct ImFontAtlas*  Fonts;
     float                FontGlobalScale;
     bool                 FontAllowUserScaling;
-    ImFont*              FontDefault;
+    struct ImFont*              FontDefault;
     struct ImVec2        DisplayFramebufferScale;
     struct ImVec2        DisplayVisibleMin;
     struct ImVec2        DisplayVisibleMax;
@@ -311,7 +311,7 @@ struct ImGuiIO {
     int                  MetricsRenderVertices;
     int                  MetricsRenderIndices;
     int                  MetricsActiveWindows;
-    ImVec2               MouseDelta;
+    struct ImVec2               MouseDelta;
     struct ImVec2        MousePosPrev;
     bool                 MouseClicked[5];
     struct ImVec2        MouseClickedPos[5];
@@ -365,6 +365,13 @@ struct ImDrawData {
     int                  TotalIdxCount;
 };
 
+struct ImDrawVert
+{
+    struct ImVec2  pos;
+    struct ImVec2  uv;
+    ImU32          col;
+};
+
 struct ImFontConfig {
     void*           FontData;
     int             FontDataSize;
@@ -374,12 +381,19 @@ struct ImFontConfig {
     int             OversampleH, OversampleV;
     bool            PixelSnapH;
     struct ImVec2   GlyphExtraSpacing;
-    ImVec2          GlyphOffset;
+    struct ImVec2          GlyphOffset;
     const ImWchar*  GlyphRanges;
     bool            MergeMode;
     char            Name[32];
     struct ImFont*  DstFont;
 };
+
+struct ImGuiListClipper
+{
+    float   StartPosY;
+    float   ItemsHeight;
+    int     ItemsCount, StepNo, DisplayStart, DisplayEnd;
+};
 #endif // CIMGUI_DEFINE_ENUMS_AND_STRUCTS
 
 CIMGUI_API struct ImGuiIO*         igGetIO();