[Feature] Add Transaction types, implement `sign_transaction` about alloy HOT 2 CLOSED

Per conversation today:

Here is the full matrix of types to be implemented. The primitive column should derive RLP. The req/response should be in alloy json rpc types (and already partially exist)

All req+response types should allow extra fields. signature on TransactionResponse should be Optional to support Optimism.

Responses should inherit primitives
Reqs should be builders, and should have an option to build into the primitive types
Provider should use req/resp

cc @Evalir

          | Primitive         | Req                | Resp 
Legacy    | TransactionLegacy | RequestLegacy      | ResponseLegacy  
1559      | Transaction1559   | Request1559        | Response1559
2930      | Transaction2930   | Request2930        | Response2930

enum      | Transaction       | TransactionRequest | TransactionResponse

receipt   | Receipt           | n/a                | ReceiptResponse

signed    | Signed<T: Transaction> 

from alloy.

Signing and transactions have been implemented.

from alloy.