CI: add `typos` job (#1734) #2305

Job	Run time
build (1.81.0, thumbv7em-none-eabi)	15s
minimal-versions	27s
build (1.81.0, wasm32-unknown-unknown)	21s
test (1.81.0)	18s
build (stable, thumbv7em-none-eabi)	9s
test (stable)	16s
build (stable, wasm32-unknown-unknown)	10s
	1m 56s

Provide feedback