move flutter ideas into own project

docs/software/nrf52-TODO.md

@@ -59,8 +59,6 @@ Needed to be fully functional at least at the same level of the ESP32 boards. At
 
 Nice ideas worth considering someday...
 
-- Use flego to me an iOS/linux app? https://felgo.com/doc/qt/qtbluetooth-index/ or
-- Use flutter to make an iOS/linux app? https://github.com/Polidea/FlutterBleLib
 - enable monitor mode debugging (need to use real jlink): https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/monitor-mode-debugging-with-j-link-and-gdbeclipse
 - Improve efficiency of PeriodicTimer by only checking the next queued timer event, and carefully sorting based on schedule
 - make a Mfg Controller and device under test classes as examples of custom app code for third party devs. Make a post about this. Use a custom payload type code. Have device under test send a broadcast with max hopcount of 0 for the 'mfgcontroller' payload type. mfg controller will read SNR and reply. DOT will declare failure/success and switch to the regular app screen.