Added a SWOT analysis assistant (#1122)

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

app/Tests/Assistants/SWOTAnalysis/SwotAnalysisSessionStateTests.cs

@@ -0,0 +1,60 @@
+using AIStudio.Assistants.SWOTAnalysis;
+using AIStudio.Tools.AssistantSessions;
+
+namespace AIStudio.Tests.Assistants.SWOTAnalysis;
+
+[TestFixture]
+public sealed class SwotAnalysisSessionStateTests
+{
+    [Test]
+    public void TheStructuredResultSurvivesAnAssistantSessionSnapshot()
+    {
+        var key = new AssistantSessionStateKey<SwotAnalysisResult?>("analysisResult");
+        var writer = new AssistantSessionStateWriter();
+        writer.Set(key, new SwotAnalysisResult
+        {
+            MatrixHeading = "SWOT Matrix",
+            Strengths = new() { Findings = [Finding()] },
+        });
+        SwotAnalysisResult? restored = null;
+
+        var reader = new AssistantSessionStateReader(writer.ToDictionary(), "SWOT Analysis");
+        reader.Restore(key, value => restored = value);
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(restored, Is.Not.Null);
+            Assert.That(restored!.MatrixHeading, Is.EqualTo("SWOT Matrix"));
+            Assert.That(restored.Strengths.Findings.Single().Summary, Is.EqualTo("Experienced team"));
+        });
+    }
+
+    [Test]
+    public void CategoryProgressSurvivesAnAssistantSessionSnapshot()
+    {
+        var key = new AssistantSessionStateKey<Dictionary<SwotAnalysisCategory, SwotCategoryAnalysisProgress>>("categoryAnalysisProgress");
+        var writer = new AssistantSessionStateWriter();
+        writer.SetDictionary(key, new Dictionary<SwotAnalysisCategory, SwotCategoryAnalysisProgress>
+        {
+            [SwotAnalysisCategory.STRENGTHS] = new(SwotCategoryAnalysisStatus.COMPLETED, new SwotCategoryAnalysisResult { Findings = [Finding()] }),
+            [SwotAnalysisCategory.WEAKNESSES] = new(SwotCategoryAnalysisStatus.RUNNING),
+        });
+        Dictionary<SwotAnalysisCategory, SwotCategoryAnalysisProgress> restored = [];
+
+        var reader = new AssistantSessionStateReader(writer.ToDictionary(), "SWOT Analysis");
+        reader.RestoreDictionary(key, restored);
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(restored[SwotAnalysisCategory.STRENGTHS].Status, Is.EqualTo(SwotCategoryAnalysisStatus.COMPLETED));
+            Assert.That(restored[SwotAnalysisCategory.STRENGTHS].Result!.Findings.Single().Summary, Is.EqualTo("Experienced team"));
+            Assert.That(restored[SwotAnalysisCategory.WEAKNESSES].Status, Is.EqualTo(SwotCategoryAnalysisStatus.RUNNING));
+        });
+    }
+
+    private static SwotFinding Finding() => new()
+    {
+        Summary = "Experienced team",
+        Explanation = "The documents describe long employee tenure.",
+    };
+}