chore: add booleans and conditionals workshop to frontend cert(JS only)

[jdwilkin4]

The frontend cert will have a module just for booleans and conditionals.
There will be lecture blocks going into more detail about booleans and if/else statements, and switch statements.
But we need a short(like 40 steps or less) workshop, for them to learn about this topic interactively.

Campers will know the following so far:

• let
• const
• assignment
• reassignment
• basic string usage
• console.log
• camelCase
• string concatenation using the + operator
• template literals
• str.length property
• bracket notation and retrieving characters from strings
• str.indexOf method
• if/else
• Number()
• Math.floor
• Math.random
• getting a random number from a range
• prompt()
• ===

This project will talk about the following:

• if/else if/else
• true and false (truthy and falsey)
• comparison operators

Acceptance criteria

• create a new folder of the project in the frontend-cert/js-projects directory
• add your completed project in an script.js file in that new folder