[Documentation:Developer] Overhauled the Getting Started page

[JManion32]

Updated the Getting Started page by:

• removing bloat
• moving things around
• dividing the page up with more headers

Specific changes include:

• Listing languages/frameworks and providing links to each of their pages
• Listing dev infrastructure and adding links where applicable
• Divided the page into 3 headers: Setting Up, Making Contributions, Helpful Links
• Added a bullet for VS Code users to help them better navigate the project
• Added a section about Dev Tools and how each tab can be used when debugging
• Removed jsfiddle bullet, and bullet about keeping a diary (not necessary in my opinion)

If anyone has suggestions for how we can further improve this page, I'm all ears!

[JManion32]

@bmcutler Here is a revised version of the Suggestions for New Developers page we talked about today. Please let me know if there is anything else I should add/delete/revise.

[Rkoester47]

I think these are great changes to the Getting Started page. All of the changes to wording make the documentation more clear and helpful, and the added links to documentation for languages and frameworks is a great idea. Overall, this is a great direction to head with updating the page.