Maintain a list of recently used connections, to facilitate re-connection to them

[andrewdavidmackenzie]

Like recent projects, keep a number of recent nodeids and ip addresses that we connected to, so facilitate re-connecting to. It might need adding a human friendly name to the node when we connect to it

[andrewdavidmackenzie]

Each entry would be on HardwareTarget type. Note that if the target has been restarted, then the nodeif for Iroh connections might have changed, or the IP and/or the port being used.

We would need to include:

• some way to remove entries from the list
• offer to remove from the list when a connection attempt fails