Added voting page & header styling fix

Implemented VoteComponent to allow users to vote for the server on multiple platforms. Updated routes, styles, and headers for consistency.

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

@@ -1,10 +1,10 @@
 header {
-  background: url("/public/img/backgrounds/120spawn-min.png") no-repeat fixed center 0;
   background-size: cover;
   text-align: center;
   width: 100%;
-  height: 100vh;
   overflow: hidden;
+  background-repeat: no-repeat;
+  background-position: center;
 }
 
 header .container {