Display time taken for each package during check

[jimhester]

It would be nice to see the time taken for each package as the check is going. Something like

✔ RTCGA 1.6.0                    ── E: 2     | W: 0     | N: 3 | (1m 40s) (1m 5s)
T recount 1.2.3                  ── E: 1     | W: 0     | N: 3 | (10m)    (9m 20s)
✔ SpidermiR 1.7.4                ── E: 0-1   | W: 0     | N: 1 | (5m 5s)  (4m 30s)
[157/217] 02:10:02 | ETA: 50m | (7) BioInstaller [I], biomartr [I], chipenr...