Why:

As stated in stated in https://agentskills.io/client-implementation/adding-skills-support#where-to-scan, the .agents/skills paths are a convention for cross-client skill sharing.

These paths are already supported by VSCode Chat: https://code.visualstudio.com/docs/copilot/customization/agent-skills#_create-a-skill, and a bug in the Copilot CLI github/copilot-cli#2161 that made them partially supported has been resolved.

What's being changed (if available, include any code snippets, screenshots, or gifs):

Added the .agents/skills project and personal paths.

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.