As a user I do not want to attempt to get to a restaurant needlessly

Right now Patat does not take into account the opening times of the restaurants and does not calculate if the user will be able to be there on time.

# Tasks
- [x] Calculate the time needed to walk to a place
- [x] Calculate the difference between current time and travel time
- [  ] Display a message to the user which includes time to close and time to travel.