Adding Chapter 3 files

Chapter3/polymorphism/methodoverloading1.py

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+#methodoverloading1.py
+class Car:
+    def __init__(self, color, seats):
+        self.i_color = color
+        self.i_seat = seats
+
+    def print_me(self, i='basic'):
+        if(i =='basic'):
+            print(f"This car is of color {self.i_color}")
+        else:
+            print(f"This car is of color {self.i_color} with seats {self.i_seat}")
+
+if __name__ == "__main__":
+    car = Car("blue", 5 )
+    car.print_me()
+    car.print_me('blah')
+    car.print_me('detail')