Feature/notebook bing search (microsoft#1729)

### Motivation and Context
<!-- Thank you for your contribution to the semantic-kernel repo!
Please help reviewers and future users, providing the following
information:
  1. Why is this change required?
  2. What problem does it solve?
  3. What scenario does it contribute to?
  4. If it fixes an open issue, please link to the issue here.
-->


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


### Contribution Checklist
<!-- Before submitting this PR, please make sure: -->
- [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 😄

---------

Co-authored-by: newton.mallick <[email protected]>
Co-authored-by: Gina Triolo <[email protected]>

Author: 3 people

.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