As a student, I want to be able to create buttons

[AlphaRLee]

GOTO: Talk to Richard (@AlphaRLee) if you are stuck

TODO: Have a second design meeting about the topic

• should button be defined as an HTML button or inside the canvas?

AC:

• Create a method button("Button label", on_button_click) that receives a user-defined function with no args and triggers it when pressed
• Render a button
• Create a method button_print_text("Button label", "Text") that prints the given text in font size 32 in the center of the screen