WASM32 - Rust- and Typescript-Adapters for internal platform agnostic types

[chrisgitiota]

Users of the Identity library for Rust and Typescript should not be aware of our internally used platform agnostic types.

Following platform agnostic types are used internally instead of original SDK types:

SDK Type	Internal platform agnostic type
ProgrammableTransaction	ProgrammableTransactionBcs
IotaTransactionBlockResponse	dyn IotaTransactionBlockResponseT object
TransactionBuilder	dyn TransactionBuilderT object

The SDK types are currently used in several public interface functions or structs in the Rust interface (e.g. IntentFn in identity_iota_core/src/rebased/proposals/borrow.rs).

To manage data flow and state changes, adapters need to be developed that can be reused at any public interface function or struct:

For non WASM32 platforms (no wasm-bindings):

• ProgrammableTransactionBcs
• dyn IotaTransactionBlockResponseT object
• dyn TransactionBuilderT object

For WASM32 platforms:

• ProgrammableTransactionBcs
• dyn IotaTransactionBlockResponseT object
• dyn TransactionBuilderT object