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/frame/alliance/src/benchmarking.rs

@@ -42,7 +42,7 @@ fn assert_last_event<T: Config<I>, I: 'static>(generic_event: <T as Config<I>>::
 }
 
 fn cid(input: impl AsRef<[u8]>) -> Cid {
-	let result = sp_core_hashing::sha2_256(input.as_ref());
+	let result = sp_crypto_hashing::sha2_256(input.as_ref());
 	Cid::new_v0(result)
 }
 

substrate/frame/alliance/src/mock.rs

@@ -388,7 +388,7 @@ pub fn new_bench_ext() -> sp_io::TestExternalities {
 }
 
 pub fn test_cid() -> Cid {
-	let result = sp_core_hashing::sha2_256(b"hello world");
+	let result = sp_crypto_hashing::sha2_256(b"hello world");
 	Cid::new_v0(result)
 }