0.1.0a11 changelog and integration docs

[eshaben]

This pull request introduces a new documentation page detailing the integration and data flow between the page_toggle and ai_docs MkDocs plugins, and updates the changelog to reflect new features and bug fixes in the ai_docs plugin. The changes provide both end users and developers with clear guidance on configuration, lifecycle hooks, template requirements, and expected data contracts for seamless plugin operation and customization.

Key changes:

Documentation improvements:

• Added a comprehensive plugin-integration.md page that explains how the page_toggle and ai_docs plugins work independently and together, including configuration, data lifecycle, template requirements, and integration steps for consuming projects.

Changelog updates:

• Documented three new configuration options for the ai_docs plugin (ai_page_actions_anchor, ai_page_actions_style, ai_page_actions_dropdown_label) that allow for more flexible placement and styling of the AI actions widget.
• Noted a bug fix in ai_docs where {target=\_blank} is now stripped from resolved markdown output to avoid unnecessary escaping in JSON serialization.

[0xlukem]

LGTM