See imgui_sdl2_vulkan_android. ImGui is checked out as a submodule. There is a lot of additional information in that project's README. In short, while this project runs great, there is a major issue ...

After updating Dear ImGui to a recent version (around commit afe20dc or later), a rendering issue occurs in imgui_memory_editor (v0.58 from ocornut/imgui_club) when used in read-only mode.