[C#] fix: Refactor 08.datasource.azureAISearch sample (#1440)

## Linked issues

closes: #minor

## Details
* Refactor gitignore file
Forgot to push this commit w/ the main PR (#1411)

## Attestation Checklist

- [x] My code follows the style guidelines of this project

- I have checked for/fixed spelling, linting, and other errors
- I have commented my code for clarity
- I have made corresponding changes to the documentation (updating the
doc strings in the code is sufficient)
- My changes generate no new warnings
- I have added tests that validates my changes, and provides sufficient
test coverage. I have tested with:
  - Local testing
  - E2E testing in Teams
- New and existing unit tests pass locally with my changes

### Additional information

> Feel free to add other relevant information below

.gitignore

@@ -106,35 +106,4 @@ dist
 .tern-port
 
 .DS_Store
-/.vs
-/dotnet/packages/Microsoft.TeamsAI/.vs
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/bin
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/obj
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI.Tests/bin
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI.Tests/obj
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI.Tests/bin/Debug/net6.0
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI.Tests/obj/Debug/net6.0
-/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI.Tests/IntegrationTests/testsettings.json
-/dotnet/samples/01.echoBot/.vs/*
-
-env/.env.*.user
-env/.env.local
-env/.env.staging
-.env*
-/dotnet/samples/NuGet.Config
-/dotnet/samples/LocalPkg/
-/dotnet/samples/08.datasource.azureaisearch/bin/Debug/net6.0
-/dotnet/samples/08.datasource.azureaisearch/obj
-/dotnet/samples/08.datasource.azureaisearch/.vs
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/bin/Debug
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/obj
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/AzureAISearchBot.csproj.user
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/AzureAISearchBot.user
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchIndexer/bin/Debug/net8.0
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchIndexer/obj/Debug/net8.0
-/dotnet/samples/AzureAISearchIndexer/obj
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchIndexer/obj
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchIndexer/appsettings.json
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/appsettings.Development.json
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/appsettings.json
-/dotnet/samples/08.datasource.azureaisearch/AzureAISearchBot/appsettings.TestTool.json
+**/.vs/

dotnet/packages/Microsoft.TeamsAI/.gitignore

@@ -0,0 +1,8 @@
+Microsoft.TeamsAI/.vs
+Microsoft.TeamsAI/bin
+Microsoft.TeamsAI/obj
+Microsoft.TeamsAI.Tests/bin
+Microsoft.TeamsAI.Tests/obj
+Microsoft.TeamsAI.Tests/bin/Debug/net6.0
+Microsoft.TeamsAI.Tests/obj/Debug/net6.0
+Microsoft.TeamsAI.Tests/IntegrationTests/testsettings.json

dotnet/samples/.gitignore

@@ -0,0 +1,3 @@
+NuGet.Config
+LocalPkg/
+.workflows/

dotnet/samples/08.datasource.azureaisearch/.gitignore

@@ -0,0 +1,14 @@
+AzureAISearchBot/bin/Debug
+AzureAISearchBot/obj
+AzureAISearchBot/AzureAISearchBot.csproj.user
+AzureAISearchBot/AzureAISearchBot.user
+AzureAISearchIndexer/bin/Debug/net8.0
+AzureAISearchIndexer/obj/Debug/net8.0
+AzureAISearchIndexer/obj
+AzureAISearchIndexer/obj
+AzureAISearchIndexer/appsettings.json
+AzureAISearchBot/appsettings.Development.json
+AzureAISearchBot/appsettings.json
+AzureAISearchBot/appsettings.TestTool.json
+.vs/
+**/env/