Counting fees is missing when wallet is locked of the peer partner

[M1ch43lV]

Hello Impalor! Thanks for the great tool, it helps a lot to have an overview of successful and unsuccessful swaps.
I have following suggestion for psweb:

1. Cumulative fee statistics for all paid fees (successful and unsuccessful ones) on one page showing all fees occurred with date and time.psw
2. Counting paid fees of unsuccessful swaps if possible. Example log which occurred with one of my peer partner whose wallet was locked:
   

2024/01/26 09:20:07 [INFO] [Swap:8eaa42137d7dca61371a4d36cadb080b3c27531e1920e2eb1306bdafbb0255b8] Paid Feeinvoice of 306 sats
2024/01/26 09:20:07 [INFO] [Swap:8eaa42137d7dca61371a4d36cadb080b3c27531e1920e2eb1306bdafbb0255b8] Swap canceled. Reason: -13:Error: Please enter the wallet passphrase with walletpassphrase first.
2024/01/26 09:20:07 [INFO] [Swap:8eaa42137d7dca61371a4d36cadb080b3c27531e1920e2eb1306bdafbb0255b8] Warning: Paid swap-out prepayment, but swap canceled before receiving opening transaction```

[Impa10r]

Yes, I agree this would be useful, but the swaps statistics is done by peerswap. Web UI can merely display it. Currently, only lightning invoices are accounted for. There is an open issue to add chain fees to the recorded stats: ElementsProject/peerswap#266

[Impa10r]

Please mention the unreported prepaid fee example at the link above