Add frontend.

frontend/src/app/components/header/header.component.html

@@ -0,0 +1,16 @@
+<div>
+    <button type="button">
+        <mat-icon>menu</mat-icon>
+    </button>
+    <img src="assets/images/codiki.png" alt="logo"/>
+    <span class="title">Codiki</span>
+</div>
+<div>
+    <input name="search-query" placeholder="Search something..." />
+    <button type="button">
+        <mat-icon>search</mat-icon>
+    </button>
+</div>
+<div>
+    <a [routerLink]="['/login']">Login</a>
+</div>