[Task] New "product-core" Repository for IOTA Interaction, CoreClient, Transaction and additional shared code

[chrisgitiota]

Description

The new product-core repository shall contain code shared by multiple IOTA products. The repository shall contain the crates:

• core
• iota_interaction
• iota_interaction_ts (path bindings/wasm/iota_interaction_ts)
• iota_interaction_rust

The following crates or folders, currently located in the identity.rs repository, need to be moved into the new repository:

• Crate identity_iota_interaction moves into product-core/iota_interaction
• Crate iota_interaction_ts moves into product-core/iota_interaction_ts
• Folder identity_iota_core/src/iota_interaction_rust moves into product-core/iota_interaction_rust
• The Transaction trait and implementation of the TransactionBuilder currently located in identity_iota_core/src/rebased/transaction_builder.rs moves into product-core/core

Regarding iota_interaction, iota_interaction_ts and iota_interaction_rust

Identity specific code, contained in these crates and folders, needs to remain in the identity repository (examples: iota_verifiable_credential, move_call_traits, ...).

Only code shared by multiple IOTA products shall be moved into the new repository (examples: iota_client_trait, sdk_types, keytool_signer?, ...).

Additional tasks:

• Based on the implementation in the identity.rs repository a product agnostic version of the Transaction trait needs to be developed as been described here
• To build iota_interaction_ts, a full NodeJS build process needs to be implemented
• GH workflow checks already applied to the moved code, needs to be implemented in the new repository also

Motivation

• Facilitate using the Transaction trait, IOTA Interaction and other shared code with all IOTA products
• Clear separation between shared and product specific code