Add NodeJS Authorization samples (auto and obo)

[rido-min]

This pull request adds a new Node.js implementation of the Auto Sign-In sample for the Microsoft 365 Agents SDK, alongside updates to the existing .NET implementation. The changes include new functionality for handling OAuth-based user authorization, integration with Microsoft Graph and GitHub APIs, and updates to documentation and configuration files.

Node.js Implementation of Auto Sign-In Sample:

• New Node.js Sample Files:

  • Added a complete implementation of the Auto Sign-In sample in Node.js, including index.ts for the main application logic, githubApiClient.ts for GitHub API integration, and userGraphClient.ts for Microsoft Graph API integration. These files demonstrate OAuth flows, user profile retrieval, and pull request fetching. [1] [2] [3]
  • Introduced adaptive card templates (pullRequestCard.json) for rendering pull request details in chat messages.

• Configuration and Dependencies:

  • Added env.TEMPLATE for environment variables and package.json to define dependencies, build scripts, and runtime scripts for the Node.js sample. [1] [2]

Updates to .NET Sample:

• Documentation Updates:
  • Updated the README.md for the .NET sample to clarify prerequisites and provide additional context for local development using dev tunnels. [1] [2]

Documentation for Node.js Sample:

• New README:
  • Created a detailed README.md for the Node.js implementation, covering prerequisites, Azure Bot Service configuration, and instructions for running and testing the sample.