Added Favicon and Logo

Fixed logging typo in GameMapper

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

@@ -5,6 +5,8 @@
 
   <span class="spacer"></span>
 
+  <img class="logo" src="assets/Gameyfin_Logo_256px.png" alt="Gameyfin Logo">
+
   <button mat-icon-button matTooltip="Reload library" (click)="reloadLibrary()" *ngIf="onLibraryScreen()">
     <mat-icon>refresh</mat-icon>
   </button>

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

@@ -1,3 +1,11 @@
 .spacer {
   flex: 1 1 auto;
 }
+
+.logo {
+  height: 36px;
+  position: absolute;
+  right: 0;
+  left: 0;
+  margin: 0 auto;
+}