Docs for Bee Observe

[mmurad2]

Is your feature request related to a problem? Please describe.
Users need additional guidance to make the most out of the framework's emitter, logging, and observability functionality. Ideally this should be one guide that ties all these concepts together.

Describe the solution you'd like
A user-facing docs page that would either live as a module here, or as a separate page under i-am-bee docs page.

The docs should cover the following:

• Why observability is important for building production-grade agents
• How Bee-observe helps users (key feature / functionality highlights). It would be good here to explain the connection to the framework's emitter functionality.
• Getting started guide (pull from readme)
• How to use the MLflow integration -- it would be good here to explain how data gets visualized and how to interpret different errors.
• How to use other backends / observability UIs

Describe alternatives you've considered
NA

Additional context
This is coming from a user request with a specific ask to cover the following:

• What are the partial updates?
• Why do some updates track LLM streaming output while others don't