ci: add typos job (#1196) #1828

Job	Run time
build (1.85.0, thumbv7em-none-eabi)	17s
build (1.85.0, wasm32-unknown-unknown)	16s
build (stable, wasm32-unknown-unknown)	9s
test (1.85.0)	19s
test (stable)	22s
build (stable, thumbv7em-none-eabi)	17s
minimal-versions / minimal-versions	29s
	2m 9s

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