[Refactor] Add top level form for app info instead of per section for quick setup guides

[Nemi Shah]

Problem Statement

Currently when visiting the quick setup guide for the first time, multiple forms are visible. At first glance this seems like theres too much info to fill because users dont realise its the same form but multiple instances of it.

Possible Solution

• Have a single instance of the form at the top of the page
• Show all code snippets by default and use placeholder values for things that need input from the user
• When the user fills the form, the placeholder values should update to using the proper ones