[Transactions]: Show encoding and decoding of various tx types.

[yash-atreya]

Example that shows the encoding and decoding of the following tx types:

• legacy
• eip1559
• eip2930
• eip4844

Eventually, also add an example for encoding and decoding of ReceiptEnvelope

[zerosnacks]

From James:

We don't want users to encode/decode TxEip___ or TxLegacy we always want them to wrap it into a TxEnvelope and use the 2718 encoding methods

We should be showing users how to convert a TransactionResponse into a TxEnvelope and then calling .recover_signer() and .tx_hash() and .encode_2718() etc?