Write docs

[danvk]

Write docs on:

• [ ] Goals of the project
• [ ] When you should use it vs. PgTyped or something else
• [x] How to set it up in a project w/ pg-to-ts
• [ ] API:
  • [x] Select
  • [x] Insert
  • [x] Update
  • [x] Delete
  • [ ] any clauses
• [ ] Development workflow

Also:

• [ ] Run TypeDoc to generate API documentation