Update ImGui to v1.84.2

Update ImGui to v1.84.1

Update ImGui to v1.84

Remove duplicated compile pragma in ImGui

Update ImGui to v1.82

Add compile pragma for imgui_tables.cpp and bump version

Update ImGui to v1.81

Add WebGL support via Emscripten, fix test task and add minimal_shell…

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Update to ImGui v1.79

Update to ImGui v1.78