feat: Generic fsm and provide side #570

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	51s
Checking fmt	33s
clippy_check	1m 37s
Android Build Only (aarch64-linux-android)	1m 11s
Android Build Only (armv7-linux-androideabi)	1m 11s
codespell	6s
Minimal Supported Rust Version	1m 23s
Checking docs	1m 15s
Cross Test (i686-unknown-linux-gnu)	5m 2s
cargo deny	29s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 52s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 37s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 30s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 42s
check_semver	1m 47s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 49s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 19s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	13s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	2m 10s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 43s
	30m 20s

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