Create Tutorial user flow

[Jaqster]

Right now it's not clear what the correct flow for creating a new tutorial should be.
I see 2 main entry points:

1. User wants to create a tutorial from scratch - maybe focusing on a specific concept (loops), or a specific micro:bit component (radio)
2. User already has an existing micro:bit program and they want to create tutorial instructions for how to build

We should think through user flows for each of these scenarios. Right now it's confusing for both - when I click Create Tutorial, it tells me I need to open a MakeCode project first. I don't know what that means...

[Jaqster]

Suggested flow for Create Tutorial:

• Tell them they need to open a folder on their local machine or a GitHub repo
• Automatically populate files for a MakeCode project
• Ask them if they have an existing MakeCode program they want to use to create the tutorial
• If so, import via URL or file
• If not, ask them what kind of tutorial they want to create (maybe these are options in the chat window?)
  • target (micro:bit, Arcade, Minecraft)
  • age/grade level
  • CS concepts (loops, conditionals, variables)
  • target components (microbit radio, Arcade sprites, etc.)