Allow alarm to be played as media sound, not alarm sound #534

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

The user should be able to make the app play the alarm sound as media sound.

Why do you want this feature?

I want the option to play alarms in a way that only I can hear them through my headphones. Normal alarms always use the phone speakers and not connected headphones or speakers.
The most apparent usecase is sleeping and not wanting to wake everyone else.

Additional information

There's a whole range of apps which do exactly this.