readd: server tab double column (#277)

lib/core/extension/widget.dart

@@ -1,32 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:toolbox/core/utils/function.dart';
-
-extension WidgetX on Widget {
-  Widget padding(EdgeInsetsGeometry padding) {
-    return Padding(padding: padding, child: this);
-  }
-
-  Widget expanded({int flex = 1}) {
-    return Expanded(flex: flex, child: this);
-  }
-
-  Widget center() {
-    return Center(child: this);
-  }
-
-  Widget tap({
-    VoidCallback? onTap,
-    bool disable = false,
-    VoidCallback? onLongTap,
-    VoidCallback? onDoubleTap,
-  }) {
-    if (disable) return this;
-
-    return InkWell(
-      onTap: () => Funcs.throttle(onTap),
-      onLongPress: onLongTap,
-      onDoubleTap: onDoubleTap,
-      child: this,
-    );
-  }
-}