Move cryptographic hashing procedures to crypto folder. (#2306)

Step towards https://github.com/paritytech/polkadot-sdk/issues/1975

As reported
https://github.com/paritytech/polkadot-sdk/issues/1975#issuecomment-1774534225
I'd like to encapsulate crypto related stuff in a dedicated folder.

Currently all cryptographic primitive wrappers are all sparsed in
`substrate/core` which contains "misc core" stuff.

To simplify the process, as the first step with this PR I propose to
move the cryptographic hashing there.

The `substrate/crypto` folder was already created to contains `ec-utils`
crate.

Notes:
- rename `sp-core-hashing` to `sp-crypto-hashing`
- rename `sp-core-hashing-proc-macro` to `sp-crypto-hashing-proc-macro`
- As the crates name is changed I took the freedom to restart fresh from
version 0.1.0 for both crates

---------

Co-authored-by: Robert Hambrock <roberthambrock@gmail.com>

substrate/primitives/core/src/bandersnatch.rs

@@ -258,7 +258,7 @@ impl TraitPair for Pair {
 		_seed: Option<Seed>,
 	) -> Result<(Pair, Option<Seed>), DeriveError> {
 		let derive_hard = |seed, cc| -> Seed {
-			("bandersnatch-vrf-HDKD", seed, cc).using_encoded(sp_core_hashing::blake2_256)
+			("bandersnatch-vrf-HDKD", seed, cc).using_encoded(sp_crypto_hashing::blake2_256)
 		};
 
 		let mut seed = self.seed();