chore: Support npm, yarn, and pnpm across reusable workflows - W-23613503

[mshanemc]

What issues does this PR fix or reference?

@W-23613503@

What changed and why?

• Updated reusable workflows to support npm, Yarn, and pnpm through configurable inputs.
• Centralized package-manager setup, caching, and dependency installation through .github/actions/setupNodeAndInstall/action.yml.
• Replaced hard-coded Yarn build, test, documentation, packaging, upload, and promotion commands with caller-provided commands.
• Preserved npm-compatible defaults for existing workflow callers.
• Documented the supported package-manager configurations and defaults in README.md.

This removes duplicated package-manager logic while allowing existing and new callers to use npm, Yarn, or pnpm consistently.