title: Use DateTime in CDS
body: <p>I have got a timestamp that consists of date and time, something like "YYYYMMddhhmmss" and I want to display it as a datetime in the Fiori frontend like "Month dd, YYYY hh:mm PM" and enable the auto DateTimePicker.</p>
  
  <p>While there are the tstmp_to_dats and tstmp_to_tims functions available in a CDS view that work fine for individual dates or times I couldn't figure out how to create a DateTime. What is the correct way?</p>