Add Power Platform Connector instructions

[troystaylor]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• My contribution adds a new instruction, prompt, or chat mode file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, or chat mode with GitHub Copilot.
• I have run node update-readme.js and verified that README.md is up to date.

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Description

These instructions will help create and validate Power Platform connector artifacts.

Type of Contribution

• [S] New instruction file.
• New prompt file.
• New chat mode file.
• Other (please specify):

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Additional Notes

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[Copilot]

Pull Request Overview

This PR introduces a new instructions file for Power Platform connector schema development and updates the main README to reference it.

• Adds power-platform-connector-instructions.md with detailed guidance for building and validating Power Platform connector schemas.
• Updates README.md to include an entry and installation links for the new instructions.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
instructions/power-platform-connector-instructions.md	New instructions for Power Platform connectors schema development
README.md	Added entry for Power Platform Connectors instructions

[aaronpowell]

There's a PR merge conflict to tackle