Use Contacts for Location Entry

Is your feature request related to a problem? Please describe.

As a user who often makes Appointments with contacts from my Address Book I whish to had an easy solution to insert their Addresses to these Appointments.

Describe the solution you'd like

I wish to had a solution like in aCalendar+ on Android.

1. Open a new Appointment.
2. Click on Add Location (German: Ort hinzufügen)
3. Start typing Address OR Contact Name
4. After 2 or 3 Letters a Dropdown menu Opens with all possible Entries
5. Typing more letters will limit the search hits further
6. You can choose a Hit by clicking on it or using up/down-Keys & Return

Describe alternatives you've considered

Can't think of any Alternative that is that easy.

Additional context

No response

Start in the appointment editor's Add Location flow and inspect how the location field and address-book contacts are currently handled. Check how autocomplete results can search both addresses and contact names, then verify keyboard selection, filtering after additional letters, and insertion of the chosen address into an appointment.