Feature/notebook bing search (microsoft#1729)

### Motivation and Context
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### Description
I have added a new notebook to show how to bring search functionality in
SK


### Contribution Checklist
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- [x] The code builds clean without any errors or warnings
- [x] The PR follows SK Contribution Guidelines
(https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
- [x] The code follows the .NET coding conventions
(https://learn.microsoft.com/dotnet/csharp/fundamentals/coding-style/coding-conventions)
verified with `dotnet format`
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

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Co-authored-by: newton.mallick <newton.mallick@celebaltech.com>
Co-authored-by: Gina Triolo <51341242+gitri-ms@users.noreply.github.com>

.gitignore

@@ -476,4 +476,5 @@ playwright-report/
 
 # Static Web App deployment config
 swa-cli.config.json
-**/copilot-chat-app/webapp/build
+**/copilot-chat-app/webapp/build
+**/copilot-chat-app/webapp/node_modules