Ai-dungeon-cli

Fixes:
- stop discarding of carriage returns `\n` in story output
- add missing import for `--slow-typing`

New features:
- partial multiplayer support (can join and post but not see other players actions)

Refactoring:
- API client class is mostly stateless, to ease migration to an external lib

Code is now more modular (split into several modules / source files)

New features:
- all configuration options are now command line args

Fixes:
- slow typing effect couldn't get activated

Fixes:
- disable debug mode (flag was hard-coded).

Port of the code to the latest version of the API (based on websocket / gql).

What does not work:
- multiplayer
- revert / alter
- explore

What works:
- everything else

Transitory release.

Using (as of writing) legacy but still up and running API at address `ai-dungeon-api.herokuapp.com`.

Next release will rely on newer GraphQL API at `api.aidungeon.io`.

First release on PyPI!

Also:
- added type hints
- setters to override text input / print function to ease using it as a lib
- bugs and fixes