Add WsBbo

[BriungRi]

Summary

Adding new WS based on the types from the docs

Test Plan

$ python examples/basic_ws.py 
Running with account address: [redacted]
{'channel': 'bbo', 'data': {'coin': 'ETH', 'time': 1746364055109, 'bbo': [{'px': '1831.8', 'sz': '32.2471', 'n': 4}, {'px': '1831.9', 'sz': '229.0857', 'n': 24}]}}
{'channel': 'bbo', 'data': {'coin': 'ETH', 'time': 1746364055581, 'bbo': [{'px': '1831.8', 'sz': '92.3172', 'n': 5}, {'px': '1831.9', 'sz': '229.0857', 'n': 24}]}}
{'channel': 'bbo', 'data': {'coin': 'ETH', 'time': 1746364055739, 'bbo': [{'px': '1831.8', 'sz': '32.2471', 'n': 4}, {'px': '1831.9', 'sz': '283.6522', 'n': 25}]}}
{'channel': 'bbo', 'data': {'coin': 'ETH', 'time': 1746364056570, 'bbo': [{'px': '1831.8', 'sz': '92.3172', 'n': 5}, {'px': '1831.9', 'sz': '283.6522', 'n': 25}]}}
{'channel': 'bbo', 'data': {'coin': 'ETH', 'time': 1746364057455, 'bbo': [{'px': '1831.8', 'sz': '94.7748', 'n': 6}, {'px': '1831.9', 'sz': '283.6522', 'n': 25}]}}

[traderben]

In order to support bbo subscriptions you would need to also update websocket_manager to handle the subscription type. Would also be good to update basic_ws.py to include the new subscription

[BriungRi]

Converting to draft. It doesn't look like the bbo topic gives anything yet. Maybe the docs are ahead of the implementation?

[traderben]

Converting to draft. It doesn't look like the bbo topic gives anything yet. Maybe the docs are ahead of the implementation?

The docs are not ahead of the implementation. Subscribing to bbo should work

[BriungRi]

The docs are not ahead of the implementation. Subscribing to bbo should work

You're right, found the issues after turning on debug logging. Thanks for the tip!

Pushed fixes + tested locally with basic_ws.py

[BriungRi]

@traderben following up here for another review when you get the chance.