Add a description and icon

[afgane]

Just adding a bit of polish to how the IT is displayed in Galaxy. Without the icon, it gets the default tool icon:

The included icon is just a suggestion so if you have something else you'd rather use, just discard this one.

[Copilot]

Pull Request Overview

This PR adds a custom icon and description to improve the presentation of the interactive chat analysis tool.

• Added an tag with src="datachat.png".
• Added a tag to provide a brief usage message.
• Removed extraneous trailing lines to clean up the XML file.

Comments suppressed due to low confidence (2)

tools/chat_analysis.xml:83

• [nitpick] The removal of extraneous trailing lines improves file cleanliness; please ensure the deletions were intentional.

</tool>

tools/chat_analysis.xml:2

• Verify that the 'datachat.png' icon is available in the expected resource directory to avoid broken image issues in the tool display.

<icon src="datachat.png" />

[qchiujunhao]

Thank you! This is great timing, as usegalaxy-tools is set to auto-update tools tomorrow morning.