refactor: move net_protocol::Blobs to top level as BlobsProtocol #388

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	51s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	1m 55s
check_semver	1m 30s
Cross Test (i686-unknown-linux-gnu)	1m 24s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 42s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 26s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	2m 1s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 32s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 38s
Minimal Supported Rust Version	1m 8s
Checking docs	54s
cargo deny	30s
Android Build Only (armv7-linux-androideabi)	1m 9s
Checking fmt	24s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 31s
codespell	5s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 37s
clippy_check	1m 21s
Android Build Only (aarch64-linux-android)	1m 8s
	23m 47s

Provide feedback