test: Implement integration tests #1153

Job	Run time
Rust fmt	29s
Build and test (stable, --features default)	1m 26s
Clippy (--no-default-features)	52s
Clippy (--all-features)	1m 32s
Build and test (stable, --no-default-features)	1m 32s
Build and test (stable, --all-features)	2m 30s
	8m 21s

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