chore(ci): Run examples in CI #1023

Job	Run time
cfg-check	58s
docs	1m 11s
doctest	1m 13s
clippy	1m 7s
examples	1m 4s
feature-checks	3m 42s
feature-powerset	5m 38s
fmt	15s
no-std	57s
wasm-unknown	1m 32s
test stable --no-default-features	1m 25s
wasm-wasi	1m 24s
test stable	1m 19s
test stable --all-features	1m 53s
test nightly --no-default-features	1m 37s
test nightly	1m 41s
test nightly --all-features	1m 56s
test 1.81 --no-default-features	1m 7s
test 1.81	58s
	30m 57s

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