centrifuge: separated out SPI library into extralibs

 * Cleanup EVT.

SPI boss fight lvl 5.1

 * Add extra wait when flashing.

Make it easier to librarify minichlink. + Pull static libgcc.a from t…

make from any example dir nowadays does a fine job of also making minichlink and minichlink.so, with them excluded in .gitignore no commit will ever upload them again.

make from any example dir nowadays does a fine job of also making minichlink and minichlink.so, with them excluded in .gitignore no commit will ever upload them again.

Separate out the gdbserver into microgdbstub.h

GDB with the ESP32-S2