Improve path settings, add icons

CHDataManagement/Model/Settings/ToolSettings.swift

@@ -0,0 +1,39 @@
+import Foundation
+
+final class ToolSettings: ObservableObject {
+
+    /// The items to show in the navigation bar
+    @Published
+    var ffprobePath: String
+
+    @Published
+    var avifencPath: String
+
+    init(ffprobePath: String,
+         avifencPath: String) {
+        self.ffprobePath = ffprobePath
+        self.avifencPath = avifencPath
+    }
+}
+
+// MARK: Storage
+
+extension ToolSettings {
+
+    convenience init(context: LoadingContext, data: ToolSettings.Data) {
+        self.init(
+            ffprobePath: data.ffprobePath,
+            avifencPath: data.avifencPath)
+    }
+
+    struct Data: Codable, Equatable {
+        let ffprobePath: String
+        let avifencPath: String
+    }
+
+    var data: Data {
+        .init(
+            ffprobePath: ffprobePath,
+            avifencPath: avifencPath)
+    }
+}