Adding the GetAll method to LocationRepository

In order to visualize the data, we need to write some code so that it can be read from the database. Let's set this up:

1. In the MeTracker project, open the ILocationRepository.cs file.
2. Add a GetAll method, which returns a list of Location objects, using the following code:

 Task<List<Location>> GetAll() ;

3. In the MeTracker project, open the LocationRepository.cs file, which implements ILocationRepository.
4. Implement the new GetAll method and return all the saved locations in the database, as shown in the following code:

public async Task<List<Location>> GetAll()
{
      await CreateConnection();
      
      var locations = await connection.Table<Location>
      ().ToListAsync();
 
      return locations;
}