<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Introduced a chat interface with message list, empty state view, and
support for user, assistant, and system messages.
* Added a chat manager for session and message handling, including
session creation, message sending, and error management.
* Implemented various chat cell types (attachments, context references,
workflow status, loading, and error cells) with corresponding data
models and view models.
* Enabled asynchronous message sending from the input box with error
alerts and automatic session creation.
* Added workflow and context-related models for advanced chat features.
* **Enhancements**
* Improved UI responsiveness with table view updates and dynamic empty
state handling.
* Provided a method to clear all attachments in the input box.
* **Bug Fixes / Style**
* Refined code formatting, access control, and minor stylistic
improvements across multiple files for consistency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Lakr