Add missing operations to tx op add.

[fnando]

What

I added these commands but didn't know we had to add them to tx op add as well.

$ stellar tx op add --help
Add Operation to a transaction

Usage: stellar tx operation add [OPTIONS] <COMMAND>

Commands:
  account-merge                Transfer XLM balance to another account and remove source account
  bump-sequence                Bump sequence number to invalidate older transactions
  change-trust                 Create, update, or delete a trustline
  claim-claimable-balance      Claim a claimable balance by its balance ID
  create-account               Create and fund a new account
  create-claimable-balance     Create a claimable balance that can be claimed by specified accounts
  create-passive-sell-offer    Create a passive sell offer on the Stellar DEX
  manage-buy-offer             Create, update, or delete a buy offer
  manage-data                  Set, modify, or delete account data entries
  manage-sell-offer            Create, update, or delete a sell offer
  path-payment-strict-receive  Send a payment with a different asset using path finding, specifying the receive amount
  path-payment-strict-send     Send a payment with a different asset using path finding, specifying the send amount
  payment                      Send asset to destination account
  set-options                  Set account options like flags, signers, and home domain
  set-trustline-flags          Configure authorization and trustline flags for an asset

$ stellar tx new --help
Create a new transaction

Usage: stellar tx new [OPTIONS] <COMMAND>

Commands:
  account-merge                Transfer XLM balance to another account and remove source account
  bump-sequence                Bump sequence number to invalidate older transactions
  change-trust                 Create, update, or delete a trustline
  claim-claimable-balance      Claim a claimable balance by its balance ID
  create-account               Create and fund a new account
  create-claimable-balance     Create a claimable balance that can be claimed by specified accounts
  create-passive-sell-offer    Create a passive sell offer on the Stellar DEX
  manage-buy-offer             Create, update, or delete a buy offer
  manage-data                  Set, modify, or delete account data entries
  manage-sell-offer            Create, update, or delete a sell offer
  path-payment-strict-send     Send a payment with a different asset using path finding, specifying the send amount
  path-payment-strict-receive  Send a payment with a different asset using path finding, specifying the receive amount
  payment                      Send asset to destination account
  set-options                  Set account options like flags, signers, and home domain
  set-trustline-flags          Configure authorization and trustline flags for an asset

Why

So all operations are available on both tx new and tx op add.

Known limitations

N/A