Squashed 'deps/imgui/' content from commit f33737806

git-subtree-dir: deps/imgui
git-subtree-split: f3373780668fba1f9bd64c208d05c20b781c9a39

examples/example_allegro5/imconfig_allegro5.h

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+//-----------------------------------------------------------------------------
+// COMPILE-TIME OPTIONS FOR DEAR IMGUI ALLEGRO 5 EXAMPLE
+// See imconfig.h for the full template
+// Because Allegro doesn't support 16-bit vertex indices, we enable the compile-time option of imgui to use 32-bit indices
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+// Use 32-bit vertex indices because Allegro doesn't support 16-bit ones
+// This allows us to avoid converting vertices format at runtime
+#define ImDrawIdx  int