WASM32 - Replace mocked Identity client with real Identity client

[chrisgitiota]

The current POC implementation in bindings/wasm/src/kinesis uses a mocked _Identity Client_ used for test purposes located in
iota_sdk_abstraction/identity_client.rs

TODOs:

• Replace currently used mocked "Identity Client" with IdentityClient located in rebased/client/full_client.rs
• If the mocked _Identity Client_ located in iota_sdk_abstraction/identity_client.rs shall be used for test purposes any longer, move the sources to an appropriate location. Otherwise, delete the sources.
• Make signer in WASM32 implementation non-owned again #1519
• Investigate/fix/workaround transaction execution finality #1520
• Fix interaction_ts import path in package.json (currently hardcoded to local node/ path)
• Make all transaction building functions and their traits async (similar to when creating identities or updating DID documents)
• Add support to get DID from an OnChainIdentity in TypeScript directly
• Remove "kinesis" wording from WASM code as well #1521