Support ESP32-C3 ECO6 and ECO7 #239

Job	Run time
Check MSRV (x86_64-unknown-linux-gnu)	3m 14s
Check lib (x86_64-unknown-linux-gnu)	1m 17s
Check MSRV (aarch64-unknown-linux-gnu)	3m 36s
Check (x86_64-apple-darwin)	5m 57s
Check lib (aarch64-unknown-linux-gnu)	2m 5s
Clippy (x86_64-unknown-linux-gnu)	2m 44s
Check MSRV (armv7-unknown-linux-gnueabihf)	3m 31s
Check lib (armv7-unknown-linux-gnueabihf)	1m 51s
Clippy (aarch64-unknown-linux-gnu)	3m 38s
Check (x86_64-unknown-linux-gnu)	2m 41s
Clippy (armv7-unknown-linux-gnueabihf)	3m 27s
Check (x86_64-unknown-linux-musl)	2m 42s
Rustfmt	23s
Check (x86_64-pc-windows-msvc)	6m 11s
Unit Tests (x86_64-unknown-linux-gnu)	1m 36s
Check (aarch64-unknown-linux-gnu)	3m 38s
Unit Tests (aarch64-unknown-linux-gnu)	2m 16s
Check (armv7-unknown-linux-gnueabihf)	3m 37s
Unit Tests (armv7-unknown-linux-gnueabihf)	2m 31s
	56m 55s

Provide feedback