Refresh "What's Dagster+"

[jmsanders]

Aug 30th Lopp:

This PR has been updated to incorporate a few changes (sorry for the large size 😢 ):

• The Dagster+ getting started topology now has two docs: "what's dagster+" and "getting started". This removes the dagster+ features doc.
  • Getting started focuses on being an actionable guide, without trying to re-describe a lot of what is in the product NUX. It relies fairly heavily on the adding a code location guide instead of replicating the content
  • What's Dagster+ builds off of Jordan's original content to explain briefly what Dagster+ is to a audience familiar with Dagster OSS, and also adds the short list of Dagster+ features (hence the removal of the features doc). This was also a natural place to put cross link out to parts of the dagster.io site as well as other guides
  • As a result, I decided to flatten the overall structure of the dagster-plus docs folder. "What's dagster+" and "getting started" are placed at the top level. Code requirements is moved to the deployment section, allowing us to remove the entire getting-started directory.
• This PR also removes the "deployment types" doc in favor of the brief description of Serverless vs Hybrid in the getting started / whats dagster+ docs. Fixes the links as a result of this removal.
• Adds the hybrid doc landing page, which takes the rest of Jordan's original content

[graphite-app]

Graphite Automations

"docs-beta - Assign Reviewers" took an action on this PR • (08/28/24)

1 label was added and 1 reviewer was added to this PR based on Pedram Navid's automation.

[github-actions]

Deploy preview for dagster-docs ready!

Preview available at https://dagster-docs-9xsyr9fsf-elementl.vercel.app
https://jordan-agent-docs-refresh.dagster.dagster-docs.io

Direct link to changed pages:

[erinkcochran87]

This seems to fit more in line with What's Dagster+? over a getting started guide, IMO. The GS guide walks users through getting set up, like signing up, selecting a deployment type, adding a code location, etc.

I do also think we need a page that describes and compares Hybrid and Serverless, to make it easy for folks to decide which one to choose. This guide does a good job of giving the user a high-level look, but I think additional detail would be helpful so I wouldn't scrap the dagster-plus/deployment-types page just yet.