feat: refactor MsgEthereumTx with eth transaction

[yihuang]

Closes: #220

Description

1. refactor MsgEthereumTx to contain the raw eth tx:

message MsgEthereumTx {
  option (amino.name) = "cosmos/evm/MsgEthereumTx";
  option (gogoproto.goproto_getters) = false;
  reserved 1,2,3,4;

  // from is the bytes of ethereum signer address. This address value is checked
  // against the address derived from the signature (V, R, S) using the
  // secp256k1 elliptic curve
  bytes from = 5;
  // raw is the raw ethereum transaction
  bytes raw = 6 [(gogoproto.customtype) = "EthereumTx", (gogoproto.nullable) = false];
}

2. Remove direct reference to TxData and Delete obsolete type files in x/vm/types/
3. Add a few missing pieces to complete eip-7702 support.

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[aljo242]

@yihuang let's fix the lint (go and proto) issues, but the proto breaking CI fail is fine

[dudong2]

Nice PR!
I've reviewed all of this work, and I think it's very graceful. I have a couple of minor comments, which I'd appreciate you checking out.

[yihuang]

@almk-dev to review once conflicts are resolved

conflicts resolved.

[yihuang]

more conflicts just came 🤦‍♂️

[vladjdk]

@yihuang a few more lints and one more conflict before we can merge this

[aljo242]

@almk-dev to prioritize reviewing

[almk-dev]

Looks good, just minor comments that should be addressed merging.
@yihuang Also, since this is such a big change, can you document the big groups of changes in the PR body? For example:

• Remove direct references to txData
• Delete obsolete type files in x/vm/types/
• Update MsgEthereumTx proto definition to use x, y, z
• etc.

[almk-dev]

Thanks for addressing all the comments and all the work that went into this!