chore: import upstream snapshot with attribution

packages/dotnet/analyzer/Models/ProjectNode.cs

@@ -0,0 +1,27 @@
+namespace MsbuildAnalyzer.Models;
+
+/// <summary>
+/// Represents an Nx project node for a .NET project.
+/// </summary>
+public record NxProjectGraphNode
+{
+    /// <summary>
+    /// The Nx project name (kebab-case).
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// The project root directory (relative to workspace root).
+    /// </summary>
+    public string Root { get; init; } = string.Empty;
+
+    /// <summary>
+    /// Nx targets available for this project.
+    /// </summary>
+    public Dictionary<string, Target> Targets { get; init; } = new();
+
+    /// <summary>
+    /// Additional metadata about the project.
+    /// </summary>
+    public ProjectMetadata? Metadata { get; init; }
+}