swapcli: add additional details to ongoing swaps
It would also be nice to add additional info other than status to ongoing swaps, for example:
- estimated time for swap to complete based on network block time
- how many more blocks we're waiting for until the next stage

Right now, it's a bit painful when waiting for a swap to complete, as there isn't a lot of detail (especially from the taker side) as to how long things will take.