text: Title: Re-Export apis like we do models
  Body: **Is your feature request related to a problem? Please describe.**
  
  Sometimes there are a lot of apis to import to even do a simple thing 
  
  **Describe the solution you'd like**
  
  Models are re-exported, allowing us to
  
  ```python
  import my-openapi-lib.models as m
  from my-openapi-lib.api.do_the_things import create_thing_to_do
  create_thing_to_do.sync(client=c, json_body=m.ThingModel(...))
  
  # I'd like to be able to do
  from my-openapi-lib import api
  api.do_the_things.create_thing_to_do.sync(client=c, json_body=m.ThingModel(...))
  # and
  from my-openapi-lib.api import do_the_things
  do_the_things.create_thing_to_do.sync(client=c, json_body=m.ThingModel(...))
  ```
  
  