Display Test Duration

[riglar]

Show test duration for each test and upload.

Things to consider for uploads:

• Do we sum the duration or calculate an overall time? The latter feels more useful but makes it tricky to account for retries

[riglar]

related comment: https://discord.com/channels/1206536148650950736/1336013572093771868/1336014563958591499

[riglar]

Also include this in the --json and --json-file exports

[riglar]

Available in 3.7.1