refactor: replace env.d.ts with tsconfig types

[TrySound]

Latest remix template stopped generating additional file for types.

Code Review

• hi @istarkov , I need you to do
  • conceptual review (architecture, feature-correctness)
  • detailed review (read every line)

Before requesting a review

• made a self-review
• added inline comments where things may be not obvious (the "why", not "what")

Before merging

• tested locally and on preview environment (preview dev login: 5de6)
• updated test cases document
• added tests
• if any new env variables are added, added them to .env.example and the builder/env-check.js if mandatory

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
webstudio-builder	✅ Ready (Inspect)	Visit Preview	Apr 9, 2024 11:06am