Dev: Building the clock face and hands with canvas rotation

[simonjvardy]

Refactoring of the clock.js script:

• Build a common clock hand function as they are all the same basic shape
• Build a degrees to radians converter as it's easier to imaging rotation in degrees than radians
• Build the Hour, Minute & Second hands
  • Pull in the current date using Date()
  • Convert the time values into clock face rotation values