CommentSection: Add an error panel

[Profpatsch]

An error panel should be created to handle all of these cases and allow retrying, reporting and opening in browser.

Originally posted by @Stypox in #11060 (comment)

NewPipe/app/src/main/java/org/schabi/newpipe/ui/components/video/comment/CommentSection.kt

Lines 112 to 116 in fdf36cb

	is Resource.Error -> {
	item {
	NoItemsMessage(R.string.error_unable_to_load_comments)
	}
	}