Organize Hedera-Cryptography Repository and create necessary gradle modules and plugins

[mxtartaglia-sl]

We need to assemble the structure of repository: /github.com/hashgraph/hedera-cryptography
This is a separate repository for hosting cryptography-related libraries. It is necessary to facilitate our build process, which includes Rust libraries. It also provides independent release cycles between consensus and block node codes.

Its current content should be replaced by the following structure:

swirlds-native-support: Gradle module that enables loading into memory compiled native libraries to be used with JNI.
swirlds-crypto-signatures: Gradle module for the Bilinear Pairings Signature Library.
swirlds-crypto-pairings-api: Gradle module for the Bilinear Pairings API. Minimizes the impact of adding or removing implementations.
swirlds-crypto-altbn128: Gradle module that will implement the Bilinear Pairings API using alt-128 elliptic curve. That curve has been chosen due to EVM support. The arkworks rust library will provide the underlying cryptography implementation. The module will include Java and Rust codes that will be compiled for all possible system architectures and distributed in a jar under a predefined structure.

Build logic should be similar to hedera-services except for swirlds-crypto-altbn128

swirlds-crypto-altbn128

This module will be a multilanguage module following the structure:

 swirlds-cryptography-alt128
swirlds-crypto-pairings-altbn128
    ├── main
    │   ├── java
    │   │   └── **
    │   └── rust
    │   │   └── **
    └── test
        └── java
            └── **

Generated resources folder structure

Rust code will be compiled first and the build process will create the following folder structure where binaries files will be placed and then distributed.
They will be arranged by platform identifier, as returned by System.getProperty("os.name") and System.getProperty("os.arch").

resources/software
    ├── LIBRARY_VERSION (Contains the version number or information for the original native library)
    ├── darwin
    │   ├── amd64
    │   │   ├── native_lib.dylib **
    │   │   └── jni_bindings.dylib
    │   └── arm64
    │   │   ├── native_lib.dylib **
    │   │   └── jni_bindings.dylib
    ├── linux
    │   ├── amd64
    │   │   ├── native_lib.so **
    │   │   └── jni_bindings.so
    │   ├── arm
    │   │   ├── native_lib.so **
    │   │   └── jni_bindings.so
    │   └── arm64
    │   │   ├── native_lib.so **
    │   │   └── jni_bindings.so
    └── windows
        └── amd64
            ├── native_lib.dll **
            └── jni_bindings.dll

** NOTE: native_lib is only required if not statically linked to the native JNI binding library

[jjohannes]

Closing, as the task is completed and follow up work is tracked in separate issues already.