extension request: preemptive multithreading lib for M0, M3, M4 (like std::thread, ftrias/TeensyThreads, ESP32)

hi,
coincidentally I found the lib ftrias/TeensyThreads https://github.com/ftrias/TeensyThreads, unfortunately working just for Teensys.
IIUC, it's not trivial to port that preemptive multithreading lib to standard Arduinos... :(
So what would be realy awesome is if there was such a std::thread implementation available for M0, M3, M4 Arduino/Adafruit cores!

Start by reviewing the requested std::thread-style behavior and the linked ftrias/TeensyThreads library, then compare its assumptions with Arduino/Adafruit cores for M0, M3, and M4. Done would mean a supported preemptive multithreading implementation for those cores, but the issue does not identify files or tests.

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