[Infrastructure] Add a script to update NPM dependencies and create PRs

[javiercn]

• Adds a script that can be run locally to:
  • Update all our NPM dependencies
  • Populate the local NPM cache we use
  • Add additional optional packages to the cache that we need but that don't get installed via install
  • Create a commit with the changes on the submodule, push a branch and create a PR for it in the submodule repo
  • Create a commit on the main repo push a branch and create a PR for it.

The script requires the GH CLI to be installed and for the user to be appropriately logged in.

Requirements:

• Node.js 20.x (winget install OpenJS.NodeJS.LTS)
• GH CLI (winget install GitHub.cli)
• vsts-npm-auth (npm install -g vsts-npm-auth)
• vsts-npm-auth.cmd -F -C ..npmrc (Run this command in the repository root to authenticate with Azure DevOps)

Sample run result

• https://github.com/dotnet/Node-Externals/pull/6
• [Infrastructure] Updated npm package cache 2024-03-22 #54702