Add new alternative formulations to watch-video and general-activity dialogs

[nelealbers]

Added simple alternative formulations to the watch-this-video, scheduling general-activity dialog, scheduling preparation dialog, HRS dialog, and the first aid kit dialog using ChatGPT. The alternative formulations were now checked by Milon's students and are shown in green in the excel-files. So now we want to add the alternative formulations to rasa.

Further, there have been modifications to the text (e.g., added emojis) in the HRS dialog and closing dialog. These are mentioned in red in the excel-files. We want to incorporate these modifications.

So this requires:

• Updating the domain files in Rasa
• Updating the e2e testing (primarily the step variables, but also the agenda steps to use verifyRasaResponseMultiple)
• Change the color of the alternative formulations and modifications to light blue so that we know that these have been incorporated.

[wbaccinelli]

The alternative formulations of the general activity dialog have been added in this PR.