[Epic] The Road to RLC Sample Generation

[MaryGao]

• [ ] Enhance pagination Helper #1387
  • [ ] Handle post in the nextLink operation
• [ ] Sample Case List
  • [ ] body-string #1389
  • [ ] body-complex
  • [ ] body-file
  • [ ] custom-baseUrl
  • [ ] header
  • [ ] http-infrastructure
  • [ ] lro
  • [ ] paging
  • [ ] URL
  • [ ] media-types
• [ ] Generate samples for multi-client package
• [ ] Generate client-level parameter
• [ ] Automate RLC sample in README.md
• [ ] Generate shortcut method if enabled rlc-shortcut
• [ ] Generate samples for diff auth clients

Refer link: https://github.com/Azure/autorest.typescript/issues/1064