feat(docs): Enhance welcome page.

[himerus]

Description

Make the landing/welcome page more of an informative jumping off point when diving into an Outline project.

Type of change

• [X] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• [X] Visually

Checklist:

• [X] My changes generate no new warnings
• [X] New and existing unit tests pass locally with my changes