Copilot Skill: Add skill for generate a release-change-log

[vanzue]

Summary of the Pull Request

As title

NOTE: To make skill work, you must be in visual studio code insider and turn on skill setting

https://code.visualstudio.com/docs/copilot/customization/agent-skills
vscode://settings/chat.useAgentSkills

PR Checklist

• Closes: #xxx

• Communication: I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end-user-facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

Here is a one time release notes generated from a single input:

Generate release notes from v0.96.1 to latest main