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/deprecated/hashing/proc-macro/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "sp-core-hashing-proc-macro"
+version = "15.0.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+homepage = "https://substrate.io"
+repository.workspace = true
+description = "Procedural macros for calculating static hashes (deprecated in favor of `sp-crypto-hashing-proc-macro`)."
+documentation = "https://docs.rs/sp-crypto-hashing-proc-macro"
+
+[badges]
+maintenance = { status = "deprecated" }
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+sp-crypto-hashing-proc-macro = { path = "../../../primitives/crypto/hashing/proc-macro" }

substrate/deprecated/hashing/proc-macro/README.md

@@ -0,0 +1,3 @@
+# Hashing Macros
+
+This package has been deprecated. Please use `sp-crypto-hashing-proc-macro`.

substrate/deprecated/hashing/proc-macro/src/lib.rs

@@ -0,0 +1,22 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! This package has been deprecated. Please use `sp-crypto-hashing-proc-macro`.
+//!
+//! Removal scheduled after June 2024.
+
+pub use sp_crypto_hashing_proc_macro::*;