feat!: Add Docs<S> which wraps the Engine<S> #96

Job	Run time
Android Build Only (aarch64-linux-android)	1m 8s
Cross Build Only (x86_64-unknown-freebsd)	44s
check_semver	1m 16s
Android Build Only (armv7-linux-androideabi)	1m 9s
Cross Test (i686-unknown-linux-gnu)	1m 3s
cargo deny	32s
Checking docs	1m 8s
Checking fmt	20s
clippy_check	1m 28s
codespell	5s
Minimal Supported Rust Version	17s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 26s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 31s
CI Test Suite / Tests (ubuntu-latest, stable, none)	30s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1m 2s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 8s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	1m 43s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 24s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	33s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 2s
	20m 29s

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