docs: add multi env tutorial #856

Job	Run time
pre-commit	2m 43s
determine changes	4s
Cargo Machete	59s
build binary \| macos aarch64	2m 59s
build binary \| linux x86_64	5m 37s
build binary \| windows aarch64	3m 59s
build binary \| macos x86_64	0s
build binary \| windows x86_64	3m 53s
cargo test \| ubuntu	4m 40s
cargo test \| macos aarch64	3m 49s
cargo test \| macos x86_64	0s
cargo test \| windows	6m 20s
cargo rustdoc \| ubuntu	1m 8s
cargo fmt \| ubuntu	14s
cargo clippy \| ubuntu	44s
Pytest \| windows x86_64	2m 52s
Integration tests \| windows x86_64	0s
Downstream tests \| windows x86_64	0s
Wheel Tests \| windows x86_64 / Test Installation of Common Wheels \| windows-x86_64	3m 3s
Pytest \| macos aarch64	1m 25s
Integration tests \| macos aarch64	0s
Downstream tests \| macos aarch64	0s
Wheel Tests \| macos aarch64 / Test Installation of Common Wheels \| macos-aarch64	1m 21s
Pytest \| linux x86_64	1m 4s
Integration tests \| linux x86_64	0s
Downstream tests \| linux x86_64	0s
Wheel Tests \| linux x86_64 / Test Installation of Common Wheels \| linux-x86_64	1m 53s
	48m 47s

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