Add micros method to get microseconds since boot#1

Merged

pandax381 merged 3 commits intomruby-esp32:masterfrom

vickash:master

Mar 12, 2023

Commits on Mar 7, 2023

Add micros method to get microseconds sice boot
vickash
committed

Commits on Mar 8, 2023

timer needs to return float instead of 32 bit int or it stops working
vickash
committed

Commits on Mar 12, 2023

Separate Timer-related methods in Timer module
pandax381
committed