Created the Draw.class

I was confused, wether to use the .uniq og .sample on the array for
creating 5 random numbers.

I went for .sample.
Changed the array to just have the ticket-values added as a string to the array.

Makes it easiser to search for the string. I intend to make an
iteration that searches for the ticket_numbers, and registers how many
entries of the specific ticket_number there is.
This could be done smarter with a multi-dimensional array and make a
count-proces for the add_ticket method.