feat: add rpc protocol, client and server #11

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	43s
Checking fmt	22s
Android Build Only (aarch64-linux-android)	1m 6s
Android Build Only (armv7-linux-androideabi)	1m 8s
check_semver	22s
Cross Test (i686-unknown-linux-gnu)	11m 22s
cargo deny	29s
Checking docs	55s
clippy_check	1m 25s
codespell	5s
Minimal Supported Rust Version	55s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 14s
CI Test Suite / Tests (ubuntu-latest, stable, none)	59s
CI Test Suite / Tests (ubuntu-latest, stable, default)	59s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 11s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	1m 42s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1m 7s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 3s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	1m 41s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 3s
	29m 51s

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