Change order of prompts in CLI-based project setup

[gfscott]

I think we can tweak the order of the prompts during setup. Currently it goes:

Prompt	Notes
Data source	Mock.shop vs. existing store. Why have this first?
Project name	This is a natural first question IMO
Language (TS or JS)	👍🏻
CSS library	👍🏻
Install dependencies?	A little odd for this to come in the middle of the flow, feels like a final step
h2 shortcut	Same here
Route scaffolding?	IMO we should just do this by default, with a --no-routes flag to opt out.
Market support?	This is optional; I think all options that can be skipped should be grouped together.

So my proposed order of prompts would be this instead — where we group required (!) decisions up front, and back-load the skippable (?) options:

1. Project name!
2. Language!
3. Data source!
4. CSS Library?
5. Route scaffolding?
6. Market support?
7. h2 shortcut?
8. Install dependencies?