blobby: add encode and decode bin utils #807

Job	Run time
cross (aarch64-unknown-linux-gnu, stable)	36s
build (1.85.0, wasm32-unknown-unknown)	18s
build (stable, thumbv7em-none-eabi)	11s
cross (powerpc-unknown-linux-gnu, 1.85.0)	43s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.85.0, sudo apt update && sudo apt install gcc-mult...	30s
build (stable, armv7a-none-eabi)	22s
cross (aarch64-unknown-linux-gnu, 1.85.0)	45s
build (1.85.0, armv7a-none-eabi)	15s
test (x86_64-apple-darwin, macos-latest, stable)	25s
build (1.85.0, thumbv7em-none-eabi)	15s
x86 (x86_64-unknown-linux-gnu, 1.85.0)	20s
cross (powerpc-unknown-linux-gnu, stable)	38s
test (x86_64-apple-darwin, macos-latest, 1.85.0)	19s
build (stable, wasm32-unknown-unknown)	8s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.85.0)	14s
x86 (x86_64-unknown-linux-gnu, stable)	17s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	9s
test (x86_64-pc-windows-msvc, windows-latest, stable)	39s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	17s
test (x86_64-pc-windows-msvc, windows-latest, 1.85.0)	39s
minimal-versions / minimal-versions	58s
	8m 58s

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