Pubkey logic

[Zetazzz]

use Pubkey type from cosmjs/amino when generating pubkey type in AminoType, according to the corresponding logic in cosmjs:

export interface MsgCreateValidatorAminoType extends AminoMsg {
  type: "cosmos-sdk/MsgCreateValidator";
  value: {
    ...
    pubkey: Pubkey;
  };
}

correct pubkey decode and encode logic, according to the corresponding logic in cosmjs:

export const AminoConverter = {
  "/cosmos.staking.v1beta1.MsgCreateValidator": {
    aminoType: "cosmos-sdk/MsgCreateValidator",
    toAmino: ({
      ...
      pubkey,
    }: MsgCreateValidator): MsgCreateValidatorAminoType["value"] => {
      return {
        ...
        pubkey: decodePubkey(pubkey)!,
      };
    },
    fromAmino: ({
      ...
      pubkey,
    }: MsgCreateValidatorAminoType["value"]): MsgCreateValidator => {
      return {
        ...
        pubkey: encodePubkey(pubkey.value),
      };
    }