Added tool calling support (#731)

Co-authored-by: krut_ni <nils.kruthoff@dlr.de>
Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Tools/ToolCallingSystem/ToolSettingsFieldDefinition.cs

@@ -0,0 +1,35 @@
+using System.Text.Json.Serialization;
+
+namespace AIStudio.Tools.ToolCallingSystem;
+
+public sealed class ToolSettingsFieldDefinition
+{
+    public string Type { get; init; } = "string";
+
+    public string Title { get; init; } = string.Empty;
+
+    public string Description { get; init; } = string.Empty;
+
+    [JsonPropertyName("enum")]
+    public List<string> EnumValues { get; init; } = [];
+
+    /// <summary>
+    /// Name of a list of options the app maintains, as an alternative to spelling them out in
+    /// the enum field. See the tool settings option sources for the available names.
+    /// </summary>
+    /// <remarks>
+    /// Use this for values the app already knows, such as languages: it keeps the list in one
+    /// place and gives the user readable names instead of raw values. Mutually exclusive with
+    /// the enum field.
+    /// </remarks>
+    public string OptionSource { get; init; } = string.Empty;
+
+    public bool Secret { get; init; }
+
+    /// <summary>
+    /// The values and names to offer for this field, from whichever way it declares them.
+    /// </summary>
+    public IReadOnlyList<ToolSettingsOption> GetOptions() => string.IsNullOrWhiteSpace(this.OptionSource)
+        ? this.EnumValues.Select(value => new ToolSettingsOption(value, value)).ToList()
+        : ToolSettingsOptionSources.Resolve(this.OptionSource);
+}