New Entry: SwiftUI and Views

[yangc95]

Description

• SwiftUI topic
• Views concept
  • Terms (H-V-ZStack)

Wanted to create loops in these examples but should wait for entry on loops to link. TY for the suggestion on views @Dusch4593, there's a bunch of built-in views that would be a great addition to Docs!

Type of Change

• Adding a new entry
• Updating the documentation (tag_

Checklist

• [x] All writings are my own.
• [x] My entry follows the Codecademy Docs style guide.
• [x] My changes generate no new warnings.
• [x] I have performed a self-review of my own writing and code.
• [x] I have checked my entry and corrected any misspellings.
• [x] I have made corresponding changes to the documentation if needed.
• [x] I have confirmed my changes are not being pushed from my forked main branch.
• [x] I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• [x] Under "Development" on the right, I have linked any issues that are relevant to this PR (write "Closes # in the "Description" above).