Wrong field name in GovMsg::Vote: "vote" should be "option"

[webmaster128]

The vote option of a MsgVote/GovMsgVote should be called option, not vote:

@@ -211,7 +211,7 @@ pub enum GovMsg {
     Vote {
         proposal_id: u64,
         /// The vote option. This should be called "option" for consistency with Cosmos SDK. Sorry for that.
-        vote: VoteOption,
+        option: VoteOption,
     },

The wrong naming currectly exists between CosmWasm and wasmvm.

Cosmos SDK naming here:

• 0.37: https://github.com/cosmos/cosmos-sdk/blob/v0.37.15/x/gov/types/msgs.go#L132
• 0.45: https://github.com/cosmos/cosmos-sdk/blob/v0.45.8/proto/cosmos/gov/v1beta1/tx.proto#L60
• 0.47 old module and new gov module

Not sure if we can ever change this but I want to mark this as our bug.

[webmaster128]

@chipshort I think we can just rename it here and accept both field names in the wasmvm type