Add the model matching engine and make capabilities a flags enum

app/MindWork AI Studio/Models/ReasoningSupport.cs

@@ -0,0 +1,36 @@
+namespace AIStudio.Models;
+
+/// <summary>
+/// States how a model reasons.
+/// </summary>
+/// <remarks>
+/// This is the resolved answer to a question the capability flags could only ask three times at
+/// once. A model reasons in exactly one of these ways, so one value says it, and the combinations
+/// which contradict each other cannot be written down any more.
+///
+/// The user interface has always thought in these terms: the expert dialog offers "no reasoning",
+/// "can be enabled", "on by default", and "always on", and used to recompute them from three flags
+/// on every render.
+/// </remarks>
+public enum ReasoningSupport
+{
+    /// <summary>
+    /// The model does not reason. This is the answer for everything we have no statement about.
+    /// </summary>
+    NONE,
+
+    /// <summary>
+    /// The model can reason, but only when the request asks it to.
+    /// </summary>
+    OPTIONAL,
+
+    /// <summary>
+    /// The model reasons unless the request turns it off.
+    /// </summary>
+    ON_BY_DEFAULT,
+
+    /// <summary>
+    /// The model always reasons. There is no way to turn it off.
+    /// </summary>
+    ALWAYS,
+}