Added a SWOT analysis assistant (#1122)

Co-authored-by: hart_s3 <sabrina.hartmann@dlr.de>

app/Tests/Chat/ContentPresentationTests.cs

@@ -0,0 +1,40 @@
+using System.Text.Json;
+
+using AIStudio.Chat;
+
+namespace AIStudio.Tests.Chat;
+
+[TestFixture]
+public sealed class ContentPresentationTests
+{
+    [Test]
+    public void TheDataHashCodeFollowsNewData()
+    {
+        var presentation = ContentPresentation.Create(ContentPresentationKind.SWOT_ANALYSIS, new { heading = "First" });
+        var firstHashCode = presentation.GetDataHashCode();
+
+        presentation.Data = JsonSerializer.SerializeToElement(new { heading = "Second" });
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(firstHashCode, Is.Not.Zero);
+            Assert.That(presentation.GetDataHashCode(), Is.Not.EqualTo(firstHashCode));
+        });
+    }
+
+    [Test]
+    public void APresentationWithoutDataHasTheHashCodeZero()
+    {
+        var presentation = new ContentPresentation { Kind = ContentPresentationKind.SWOT_ANALYSIS };
+
+        Assert.That(presentation.GetDataHashCode(), Is.Zero);
+    }
+
+    [Test]
+    public void ACloneHasTheSameDataHashCode()
+    {
+        var presentation = ContentPresentation.Create(ContentPresentationKind.SWOT_ANALYSIS, new { heading = "First" });
+
+        Assert.That(presentation.DeepClone().GetDataHashCode(), Is.EqualTo(presentation.GetDataHashCode()));
+    }
+}