feat(app): add mock pages and some header feats

src/app/pages/ui-features/ui-features.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-ui-features',
+  templateUrl: './ui-features.component.html',
+  styleUrls: ['./ui-features.component.scss']
+})
+export class UiFeaturesComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+
+}