Update imgui to v1.92.8 (and implot/ImGuizmo), fix AddRect signature

- deps/imgui/imgui:    922a11f0 -> v1.92.8 (8936b58f)
- deps/imgui/implot:   v1.0 (3da8bd34) -> latest master (d65a2bef)
- deps/imgui/ImGuizmo: fb5dec9 -> jdumas/ImGuizmo@097e4da
- .gitmodules: point ImGuizmo at https://github.com/jdumas/ImGuizmo.git
- color_bar.cpp: swap AddRect thickness/flags args (imgui 1.92.8 signature)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: jdumas

.gitmodules

@@ -17,4 +17,4 @@
 	url = https://github.com/epezent/implot
 [submodule "deps/imgui/ImGuizmo"]
 	path = deps/imgui/ImGuizmo
-	url = https://github.com/nmwsharp/ImGuizmo.git
+	url = https://github.com/jdumas/ImGuizmo.git

deps/imgui/ImGuizmo

@@ -260,7 +260,7 @@ void OnscreenColorBarWidget::draw() {
 
   // draw the border around the map
   dl->AddRect(barTopLeft, ImVec2(barTopLeft.x + barRegionWidth, barTopLeft.y + barRegionHeight), foregroundColor, 0.f,
-              ImDrawFlags_None, borderWidth);
+              borderWidth, ImDrawFlags_None);
 
   // title text
   dl->AddText(ImVec2(barTopLeft.x + 0.5 * borderWidth, barTopLeft.y - 1.3 * titleHeight), foregroundColor,