Rework content commands, add audio player

CHDataManagement/Views/Files/FileSelectionView.swift

@@ -0,0 +1,28 @@
+import SwiftUI
+
+struct FileSelectionView: View {
+
+    @Binding
+    private var selectedFile: FileResource?
+
+    @Environment(\.dismiss)
+    private var dismiss
+
+    init(selectedFile: Binding<FileResource?>) {
+        self._selectedFile = selectedFile
+    }
+
+    var body: some View {
+        VStack {
+            FileListView(selectedFile: $selectedFile)
+                .frame(minHeight: 500, idealHeight: 600)
+            HStack {
+                Button("Cancel") {
+                    selectedFile = nil
+                    dismiss() }
+                Button("Select") { dismiss() }
+            }
+        }
+        .padding()
+    }
+}