Add fire-service-advisor skill

[elearningshow]

Summary

Adds a new AI Edge Gallery skill for fire-service incident support.

Changes

• Added skills/fire-service-advisor/SKILL.md
• Added skills/fire-service-advisor/readme.md

What this skill does

• Provides fire-service triage and tactical decision support
• Requires mandatory intake of emergency type and location before guidance
• Adapts guidance for crew members, incident commanders, and public-facing use
• Redirects medical, hazmat, and law-enforcement situations to the appropriate handoff

Notes

This contribution follows the existing skills folder structure and includes both the skill definition and human-readable documentation.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.