Fix @octokit/rest ESM compatibility error in feature distribution workflow

[Copilot]

The GitHub Actions workflow for distributing feature files was failing with an ES Module import error:

Error [ERR_REQUIRE_ESM]: require() of ES Module /home/runner/work/.github/.github/node_modules/@octokit/rest/dist-src/index.js from /home/runner/work/.github/.github/[stdin] not supported.
Instead change the require of index.js in /home/runner/work/.github/.github/[stdin] to a dynamic import() which is available in all CommonJS modules.

Root Cause: The @octokit/rest package was upgraded to version 22.0.0+ which became ES module only, breaking the CommonJS require() syntax used in both the GitHub Actions inline script and the manual distribution script.

Solution: Pin @octokit/rest to version 20.1.2, which is the last version that supports CommonJS require() syntax. This maintains backward compatibility without requiring a complete rewrite of the scripts to use ES module syntax.

Changes Made:

• Updated .github/workflows/distribute-features.yml to install @octokit/rest@20.1.2 specifically
• Added documentation in scripts/README.md explaining the version requirement
• Created .gitignore to prevent accidental commits of node_modules

Testing: Verified that both the GitHub Actions inline script and the manual scripts/distribute-features-manual.js script work correctly with the pinned version.

This fix ensures the feature distribution workflow runs successfully without breaking existing functionality or requiring major code changes.

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