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/bin/node/cli/tests/common.rs

@@ -112,7 +112,7 @@ pub fn executor_call(
 	let heap_pages = t.storage(sp_core::storage::well_known_keys::HEAP_PAGES);
 	let runtime_code = RuntimeCode {
 		code_fetcher: &sp_core::traits::WrappedRuntimeCode(code.as_slice().into()),
-		hash: sp_core::blake2_256(&code).to_vec(),
+		hash: sp_crypto_hashing::blake2_256(&code).to_vec(),
 		heap_pages: heap_pages.and_then(|hp| Decode::decode(&mut &hp[..]).ok()),
 	};
 	sp_tracing::try_init_simple();