chore: split `x` sBTC into `x` UXTOs

[samricotta]

In the remote mode there are 2 issues:

1. We must wait until the staking transactions are confirmed to become part of the Bitcoin ledger, which is about 10 mins
2. Each wallet only has a set amount of UTXOs available. This means we need to wait for any staking transactions to be confirmed in order to use the UTXOs again.

To solve this issue the program could break an amount (let's say X sBTC that has been preloaded into the wallet) into 5k UTXOs.

The steps to execute this are as follows:

1. Create X addresses dependant of the amount that the wallet is funded using getnewaddress
2. Send a transfer that equally splits the amount amongst these addresses using bitcoin-cli help sendmany

This will need to happen when initial fund is called but can be done in the btcclient

[Lazar955]

We must wait until the staking transactions are confirmed to become part of the Bitcoin ledger, which is about 10

Are we not currently waiting for stk tx inclusion, depending on the depth?

Send a transfer that equally splits the amount amongst these addresses using bitcoin-cli help sendmany

No need for the cli, we have send many on the btc rpcClient itself, so this should be a routine in the remote mode