feat: Restructuring Part3 inspector crate #4303

Job	Run time
check	16s
check no_std	21s
check serde	22s
clippy	1m 20s
check no_std kzg-rs	25s
check std	24s
docs	58s
fmt	10s
test stable --no-default-features	53s
TyposCheck	7s
test stable	56s
test stable --all-features	1m 17s
test beta --no-default-features	56s
test beta	1m 7s
test beta --all-features	1m 16s
test nightly --no-default-features	55s
test nightly	45s
test nightly --all-features	1m 9s
	13m 37s

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