Rock Paper Scissor :
- display prompt about user interface , aking user about there choice
- read user input from console
- if input is valid more from "p" , "q" , "r" then ~ 3.1. Choose AI move at random
- Compare Player move with AI move
- Show the result
- else-if input is "q" then we quite the program
- if input is anything else we print 'invalid input' note : we have to execute all the logic in an infinite loop , like while loop have true , i.e. while(true)