[ie/adn] require subscriptions in German

[infanf]

ADN DE requires an account and subscription for all videos
add error message for missing subscription case if logged in

IMPORTANT: PRs without the template will be CLOSED

Description of your pull request and other information

ADN only supports login using username/password. Adjust raise_login_required call accordingly.
Also the German site is still somewhat restricted as it doesn't provide free ad supported content (yet). Added checks for this and raise Exceptions if the user isn't logged in or doesn't have a subcription.

Fixes #9067

Template

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• At least skimmed through contributing guidelines including yt-dlp coding conventions
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• Fix or improvement to an extractor (Make sure to add/update tests)
• New extractor (Piracy websites will not be accepted)
• Core bug fix/improvement
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[bashonly]

Are these values unix timestamps? And if so, should we rely on currentDate instead of time.time()? IMO we should do this a bit more safely (and use snake_case):

Suggested change

	video = options['video']
	startDate = video.get('startDate')
	currentDate = video.get('currentDate')
	if startDate and currentDate and startDate > currentDate:
	raise ExtractorError(f'This video is not available yet. Release date: {startDate}', expected=True)
	start_date = traverse_obj(options, ('video', 'startDate', {int}))
	current_date = traverse_obj(options, ('video', 'currentDate', {int}))
	if start_date and current_date and start_date > current_date:
	raise ExtractorError(f'This video is not available yet. Release date: {start_date}', expected=True)

and if these are unix timestamps, Release date: {start_date} is not useful IMO

Perhaps we should even check this after the if not formats: statement below?

[infanf]

These are ISO 8601 UTC timestamps. Do I need to convert that to unix timestamps or datetime for comparison?
If this is a future video we won't reach the formats section, because user.get('hasAccess') will be false.
Thanks for pointing out snake case, that's what you get for relying on Copilot too much 🤦
I'll push a fix tomorrow.

[bashonly]

ah ok. I'd import parse_iso8601 from utils and import time and do this then:

Suggested change

	video = options['video']
	startDate = video.get('startDate')
	currentDate = video.get('currentDate')
	if startDate and currentDate and startDate > currentDate:
	raise ExtractorError(f'This video is not available yet. Release date: {startDate}', expected=True)
	start_date = traverse_obj(options, ('video', 'startDate', {str}))
	if (parse_iso8601(start_date) or 0) > time.time():
	raise ExtractorError(f'This video is not available yet. Release date: {start_date}', expected=True)

[bashonly]

will add this in the cleanup commit instead

Suggested change

*.ssa