add AsTable method to print peer in a table

Signed-off-by: Jakub Sokołowski <jakub@status.im>

json.go

@@ -17,6 +17,10 @@ func (p Peer) String() string {
 
 type peerId string
 
+func (p Peer) AsTable() string {
+	return fmt.Sprintf("%15s | what", p.Id)
+}
+
 // the ID is too long to display in full in most places
 func (id peerId) String() string {
 	return fmt.Sprintf("%s...%s",

main.go

@@ -66,7 +66,7 @@ func writePeers(g *gocui.Gui, peers []Peer) {
 		}
 		v.Clear()
 		for _, peer := range peers {
-			fmt.Fprintf(v, "%v\n", peer)
+			fmt.Fprintf(v, "%s\n", peer.AsTable())
 		}
 		return nil
 	})