Add netcup logo to sponsor block on homeapge

Author: ChrisLovering

pydis_site/static/images/sponsors/netcup.png

@@ -173,6 +173,9 @@ <h1 class="title is-6 has-text-grey">
           Sponsors
         </h1>
         <div class="columns is-mobile is-multiline">
+          <a href="https://www.netcup.eu/" class="column is-narrow">
+            <img src="{% static "images/sponsors/netcup.png" %}" alt="netcup"/>
+          </a>
           <a href="https://www.linode.com/?r=3bc18ce876ff43ea31f201b91e8e119c9753f085" class="column is-narrow">
             <img src="{% static "images/sponsors/linode.png" %}" alt="Linode"/>
           </a>