Vlog 03: Integrating Dear ImGui (1.92.0+) with latest jME3: Initial Findings, Traps, and Architecture Choices

Ok, so this implementation of RawInputListener did actually work for me, but ImGui can benefit from more events than can be handled here (e.g. SDL_EVENT_TEXT_INPUT, SDL_EVENT_GAMEPAD_ADDED, SDL_EVENT_GAMEPAD_REMOVED) - so I think it would be better if we could directly hook into SDL event system (requested in another thread, issue created on github: https://github.com/jMonkeyEngine/jmonkeyengine/issues/2864).