feat: Restructuring Part3 inspector crate #4302

Job	Run time
check no_std	20s
check	18s
clippy	1m 14s
check no_std kzg-rs	29s
check serde	27s
docs	1m 1s
check std	19s
fmt	6s
test stable --no-default-features	16s
TyposCheck	5s
test stable	52s
test stable --all-features	1m 12s
test beta --no-default-features	25s
test beta	58s
test beta --all-features	1m 22s
test nightly --no-default-features	59s
test nightly	1m 48s
test nightly --all-features	1m 57s
	14m 8s

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