Paradex-py

1. Modifications to `ParadexApiClient` methods:
- The `params` parameter has been added, supporting all API query string parameters.
- Consequently, this has led to interface adjustments for several methods.
2. Changes in `ParadexWebsocketClient.subscribe()` method arguments:
- The `market` parameter has been removed.
- `params` has been introduced, currently supporting `market` and `program`.
- Additionally, a `callback` parameter has been included, triggered when a message is received for this channel.
- The signature for the callback method is `(ws_channel: ParadexWebsocketChannel, message: dict) -> None`.
3. Removal of `ParadexWebsocketClient.read_messages()` from the public interface.

> [!WARNING]
> Experimental SDK, library API is subject to change

Highlights:

- Automatic account generation with L1 or L2 private key
- Automatic onboarding and auth calls with signatures and jwt token retrieval
- Calls to public and private REST API endpoints
- Connect to WebSocket API channels