Refactor StarknetWrapper and TransactionWrapper

[FabijanC]

Usage

• No change in the way users will see Devnet (actually depends on how we look at the state update not being run after unsuccessful deployments).

Dev

• StarknetWrapper:
  • __update_state was called in StarknetWrapper.deploy regardless of deployment success - this was probably wrong.
  • Separate call and invoke.
  • Make invoke transactions follow the same principle so far used by deploy transactions (push try-except logic from server to StarknetWrapper).
• TransactionWrapper:
  • Tx hash is taken from internal tx objects (tx wrappers no longer require Starknet state/config)
  • Make more use of super constructor.
  • Eliminate generate_transaction.
  • Use helper classes (Details classes) instead of **kwargs.