feat: ed25519 derivation

[curtis-h]

Description:

Adding ed25519 derivation through submodule and wrapper code.

Checklist:

• My PR follows the contribution guidelines of this project
• My PR is free of third-party dependencies that don't comply with the Allowlist
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked the PR title to follow the conventional commit specification

[atala-dev]

Code Coverage

File	Coverage [61.79%]	❌
apollo/src/androidMain/kotlin/org/hyperledger/identus/apollo/derivation/EdHDKey.kt	63.04%	❌
apollo/src/androidMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdPrivateKey.kt	54.55%	❌
apollo/src/appleMain/kotlin/org/hyperledger/identus/apollo/derivation/EdHDKey.kt	63.04%	❌
apollo/src/appleMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdPrivateKey.kt	54.55%	❌
apollo/src/commonMain/kotlin/org/hyperledger/identus/apollo/derivation/EdHDKey.kt	63.04%	❌
apollo/src/commonMain/kotlin/org/hyperledger/identus/apollo/utils/ConvertEd25519.kt	0.00%	❌
apollo/src/commonMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdKeyPair.kt	100.00%	✅
apollo/src/commonMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdPrivateKey.kt	54.55%	❌
apollo/src/jsMain/kotlin/org/hyperledger/identus/apollo/derivation/EdHDKey.kt	63.04%	❌
apollo/src/jsMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdPrivateKey.kt	54.55%	❌
apollo/src/jvmMain/kotlin/org/hyperledger/identus/apollo/derivation/EdHDKey.kt	63.04%	❌
apollo/src/jvmMain/kotlin/org/hyperledger/identus/apollo/utils/KMMEdPrivateKey.kt	54.55%	❌

Total Project Coverage	88.93%	❌