.Net: Remove use of the samples/skills folder (#4684)

### Motivation and Context

`sample\skills` folder will be removed soon

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

dotnet/src/IntegrationTests/IntegrationTests.csproj

@@ -22,6 +22,8 @@
   </ItemGroup>
   <ItemGroup>
     <None Remove="prompts\GenerateStoryHandlebars.yaml" />
+    <None Remove="skills\FunSkill\Joke\config.json" />
+    <None Remove="skills\FunSkill\Joke\skprompt.txt" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Configuration" />
@@ -89,4 +91,13 @@
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </EmbeddedResource>
   </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="skills\FunSkill\Joke\config.json">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </EmbeddedResource>
+    <EmbeddedResource Include="skills\FunSkill\Joke\skprompt.txt">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </EmbeddedResource>
+  </ItemGroup>
 </Project>

dotnet/src/IntegrationTests/Plugins/SamplePluginsTests.cs

@@ -42,7 +42,7 @@ public void CanLoadSampleSkillsCompletions()
         Assert.NotNull(kernel.Plugins);
         var metadata = kernel.Plugins.GetFunctionsMetadata();
         Assert.NotNull(metadata);
-        Assert.Equal(48, metadata.Count); // currently we have 48 sample plugin functions
+        Assert.Single(metadata);
         metadata.ToList().ForEach(function =>
         {
             Assert.NotNull(kernel.Plugins.GetFunction(function.PluginName, function.Name));

dotnet/src/IntegrationTests/TestHelpers.cs

@@ -28,18 +28,7 @@ internal static void ImportAllSamplePlugins(Kernel kernel)
 
     internal static void ImportAllSampleSkills(Kernel kernel)
     {
-        ImportSamplePromptFunctions(kernel, "../../../../../../samples/skills",
-            "ChatSkill",
-            "SummarizeSkill",
-            "WriterSkill",
-            "CalendarSkill",
-            "ChildrensBookSkill",
-            "ClassificationSkill",
-            "CodingSkill",
-            "FunSkill",
-            "IntentDetectionSkill",
-            "MiscSkill",
-            "QASkill");
+        ImportSamplePromptFunctions(kernel, "./skills", "FunSkill");
     }
 
     internal static IReadOnlyKernelPluginCollection ImportSamplePlugins(Kernel kernel, params string[] pluginNames)

dotnet/src/IntegrationTests/skills/FunSkill/Joke/config.json

@@ -0,0 +1,26 @@
+{
+  "schema": 1,
+  "description": "Generate a funny joke",
+  "type": "completion",
+  "completion": {
+    "max_tokens": 1000,
+    "temperature": 0.9,
+    "top_p": 0.0,
+    "presence_penalty": 0.0,
+    "frequency_penalty": 0.0
+  },
+  "input": {
+    "parameters": [
+      {
+        "name": "input",
+        "description": "Joke subject",
+        "defaultValue": ""
+      },
+      {
+        "name": "style",
+        "description": "Give a hint about the desired joke style",
+        "defaultValue": ""
+      }
+    ]
+  }
+}

dotnet/src/IntegrationTests/skills/FunSkill/Joke/skprompt.txt

@@ -0,0 +1,13 @@
+WRITE EXACTLY ONE JOKE or HUMOROUS STORY ABOUT THE TOPIC BELOW
+
+JOKE MUST BE:
+- G RATED
+- WORKPLACE/FAMILY SAFE
+NO SEXISM, RACISM OR OTHER BIAS/BIGOTRY
+
+BE CREATIVE AND FUNNY. I WANT TO LAUGH.
+Incorporate the style suggestion, if provided: {{$style}}
++++++
+
+{{$input}}
++++++