[FEATURE] Integrate hardcoded strings into translation workflows

[jfmcquade]

What?
A limited number of hardcoded strings are included as default values in the app config:

open-app-builder/packages/data-models/app-config/globals.ts

Lines 10 to 15 in dab81ac

	feedback_add_button_text: "Add Feedback",
	feedback_suggest_change_text: "Suggest Change",
	feedback_sent_text: "Thank you for your feedback",
	feedback_unsent_text: "You are currently offline. Feedback will be sent when next online",
	notification_default_title: "Notification",
	notification_default_text: "You have a new message",

These strings should be integrated into the translation workflows somehow.

Another example of hardcoded strings is these navigation labels in the tour service:

open-app-builder/src/app/feature/tour/tour.service.ts

Lines 55 to 57 in f8d523b

	nextLabel: this.translateService.translateValue("Next"),
	prevLabel: this.translateService.translateValue("Previous"),
	doneLabel: this.translateService.translateValue("Done"),

I believe these are currently managed by manually ensuring that the strings are included in any complete set of deployment app strings for translation (@esmeetewinkel is that right?).

We may also want additional hardcoded strings in other contexts in the future, for example, see this discussion on #2788. So likely we want to gather all such strings on one place and find a general solution for including them all intranslations.