Create a Python program named cst$-150-$turtle$-$shapes.py$.$

Write five methods: a$.$ drawCircle $-$ Prompts the user for the radius and uses Turtle graphics to draw a circle. b$.$ drawTriangle $-$ Uses Turtle graphics to draw a triangle. c$.$ drawSquare $-$ Uses Turtle graphics to draw a square. d$.$ drawOctagon $-$ Uses Turtle graphics to draw an octagon. e$.$ main $-$ Demonstrates each of the methods above. It prompts the user for the number of sides, draws the corresponding shape, and asks if the user wants to draw another shape. The program should clear the canvas before drawing new shapes.

The program should prompt the user if they would like to add an additional shape. If the user chooses "Yes," the program should prompt the user for the number of sides and draw another shape. If the user selects anything else, the program should stop.

Use the clear function from the Turtle documentation to reset the canvas before drawing new shapes.

Save and run your program to demonstrate drawing shapes with Turtle graphics.