Epic: Deployment examples

[Alex Ruheni]

• Create or update the deployment starter examples
  • Azure Functions
  • prisma/docs#5087
  • prisma/docs#5291
  • prisma/docs#5109
  • #4799
  • prisma/docs#5088
  • Cloudflare Workers
  • Deno Deploy
  • Google Cloud functions
• Remove Heroku example guides (dependent on prisma/docs#4843)

[Jon Harrell]

Closing this as duplicate of #4721

Moved all info over there.