feat: wip plan view, and component numeric pad

lib/application/component/custom_app_bar/custom_app_bar.dart

@@ -0,0 +1,42 @@
+import 'package:cims_apps/application/component/button/back_button_view.dart';
+import 'package:cims_apps/application/theme/color_palette.dart';
+import 'package:flutter/material.dart';
+
+class CustomAppBar extends StatelessWidget implements PreferredSizeWidget {
+  final Widget? leading;
+  final String title;
+  final List<Widget>? trailing;
+  final double height;
+
+  const CustomAppBar({
+    Key? key,
+    required this.height,
+    this.leading,
+    required this.title,
+    this.trailing,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: EdgeInsets.symmetric(horizontal: 24),
+      decoration: BoxDecoration(
+          border: Border(bottom: BorderSide(color: ColorPalette.slate200))
+      ),
+      child: AppBar(
+        toolbarHeight: 70,
+        backgroundColor: Colors.white,
+        surfaceTintColor: Colors.white,
+        automaticallyImplyLeading: false,
+        leadingWidth: 40,
+        leading: leading ?? BackButtonView(),
+        title: Text(title),
+        centerTitle: true,
+        actions: trailing ?? [],
+      ),
+    );
+  }
+
+  @override
+  Size get preferredSize => Size.fromHeight(height);
+}