[Change Request] Add more accurate timings

[dsmits]

From our test run. It's not complete though :'(

Episode	Duration
1	65 minutes
2	30 minutes
3	After lunchbreak: 30 mins
4	30 minutes
5	Before break: 1h10m

[dsmits]

@frankcorneliusmartin do you have more data on this?

[wbaccinelli]

I remember that episode 2 took 30 minutes

[frankcorneliusmartin]

Put this in the carpentries estimates

[frankcorneliusmartin]

• chapter 5-8 took more time than anticipated because of the hands-on (linux,macos,windows)
• chapter 1-4 were actually a bit quicker. (+- 10 mins per chapter)