External files, improve page generation

CHDataManagement/Views/Settings/SettingsListView.swift

@@ -0,0 +1,13 @@
+import SwiftUI
+
+struct SettingsListView: View {
+
+    @Binding
+    var selectedSection: SettingsSection
+
+    var body: some View {
+        List(SettingsSection.allCases, selection: $selectedSection) { item in
+            Label(item.rawValue, systemSymbol: item.icon).tag(item)
+        }
+    }
+}