Add avatars and icons to the chat panel to improve the user interface. Also, add a demo code block to show how to use the Button component. The demo code block is currently commented out.
Add a command menu to ChatPanel that allows users to access DevChat bots and run context commands. The command menu is displayed when the user types a command that starts with '/'. The menu includes commands for generating or updating code, writing a commit message, and writing a doc for reference, wiki, or discussion. The menu is styled using the existing ChatPanel styles.
Add a chat panel with a menu and input field for sending messages. The menu contains options for settings, messages, gallery, and search. The chat panel also includes a list of instructions and a button for adding new messages.
