feat(vsc): Update basic node templates to latest Agents SDK

[rido-min]

https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/33515710

This pull request introduces significant updates to the Microsoft 365 Agents Toolkit templates, focusing on dependency upgrades, architectural improvements, and migration to a new SDK (@microsoft/agents-hosting-express). These changes streamline development, modernize the codebase, and improve maintainability. The most important changes are grouped into documentation updates, dependency and configuration updates, and code refactoring.

Dependency and Configuration Updates:

• Upgraded Node.js version from ~18 to ~22 in Azure Bicep files for both basic-custom-engine-agent and default-bot templates to align with modern runtime environments. [1] [2]
• Replaced @microsoft/agents-hosting with @microsoft/agents-hosting-express (version ^1.0.0) in package.json.tpl files, removing the need for manual Express setup. Updated nodemon to ^3.1.10. [1] [2]

Code Refactoring:

• Simplified server setup by replacing custom Express configurations with the startServer method from @microsoft/agents-hosting-express in index.js files for basic-custom-engine-agent and default-bot templates. [1] [2]
• Refactored teamsBot and agentApp event handlers to use new method names (onMessage, onActivity, onConversationUpdate) for improved readability and consistency. [1] [2] [3]
• Removed custom adapter.js files in favor of the built-in adapter provided by @microsoft/agents-hosting-express, reducing boilerplate code.

[rido-min]

@qinzhouxu do you know how to validate the templates ?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.03%. Comparing base (8a544ed) to head (68a3a97).
⚠️ Report is 10 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #14359      +/-   ##
==========================================
+ Coverage   89.99%   90.03%   +0.03%     
==========================================
  Files         647      650       +3     
  Lines       38801    38916     +115     
  Branches     7628     7702      +74     
==========================================
+ Hits        34920    35038     +118     
+ Misses       1766     1759       -7     
- Partials     2115     2119       +4     

see 23 files with indirect coverage changes

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[qinzhouxu]

@qinzhouxu do you know how to validate the templates ?

You need to debug the project locally. Simple steps:

• run npm run setup in root folder
• Use VSC to open packages/vscode-extension, hit F5 to debug
• In the pop-up debug window, create a project corresponding to modified template use the toolkit extension
• If there are any issues, build the templates again (npm run build/npm run build:vsc under templates folder) and re-debug

[rido-min]

• build the pacakages/templates

how to re-build the templates? I dont see packages/templates

[qinzhouxu]

• build the pacakages/templates

how to re-build the templates? I dont see packages/templates

Added more detail in comments above