feat: add components to build config: list-index, stepper

Author: Pooya Parsa

Diff for: lib/f7-config.js

@@ -21,6 +21,7 @@ const config = {
     'accordion',
     'contacts-list',
     'virtual-list',
+    'list-index',
 
     // Timeline
     'timeline',
@@ -44,6 +45,7 @@ const config = {
     'radio',
     'toggle',
     'range',
+    'stepper',
     'smart-select',
 
     // Grid
@@ -90,7 +92,10 @@ const config = {
     'typography'
   ],
   darkTheme: true,
-  themes: ['ios', 'md'],
+  themes: [
+    'ios',
+    'md'
+  ],
   ios: {
     themeColor: '#007aff',
     colors: {