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/client/chain-spec/src/genesis_config_builder.rs

@@ -62,7 +62,7 @@ where
 	pub fn new(code: &'a [u8]) -> Self {
 		GenesisConfigBuilderRuntimeCaller {
 			code: code.into(),
-			code_hash: sp_core::blake2_256(code).to_vec(),
+			code_hash: sp_crypto_hashing::blake2_256(code).to_vec(),
 			executor: WasmExecutor::<(sp_io::SubstrateHostFunctions, EHF)>::builder()
 				.with_allow_missing_host_functions(true)
 				.build(),