[Cient] Allow transaction flow

[pradel]

When arriving on the app, before depositing any money, a transaction should be broadcasted and included in a block (see how boom is working)

smth like this:

 doContractCall({
      network,
      contractAddress: 'ST000000000000000000002AMW42H',
      contractName: 'pox',
      functionName: 'allow-contract-caller',
      functionArgs: [
        contractPrincipalCV(
          'ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM',
          'stacks-bingo'
        ),
        noneCV(),
      ],
      onFinish: (data) => {
        console.log(data);
      },
    });

1. Show in UI button to trigger the transaction
2. If you reload the page query the mempool to see if a pending tx is included (bonus)
3. Once tx is included, show the input for the amount