How to add location text character by character like in action movies?
I found a way:

Add title text to video
Add the Rotoscope effect to the title
At timeline start of text: draw the rotoscope shape around the text (see below)
At timeline end of text: add keyframe and move the shape behind the text (see below)
Set the effect mode to Luma
Add the Cairo Blend composition to the title
Set the gradient mode to Add

Now the title text should appear from left to right. It does not appear character by character, but this is ok.
The rotoscope effect is quite mighty - this video teached me how to use it: 
                
            
Additionally I found this cool sound, which is quite exactly I was looking for:
https://freesound.org/people/Sky_Motion/sounds/416777/