Migrate minecraft to Paper (#37)

I want to configure monitoring for Minecraft, and it's not possible with the Vanilla version. So we're testing Paper

Reviewed-on: https://git.badhouseplants.net/badhouseplants/k8s-cluster-config/pulls/37

common/values.service-monitor.yaml

@@ -0,0 +1,16 @@
+---
+service-monitor:
+  templates: 
+    - | 
+      {{ range .Values.service-monitor.resources }}
+      apiVersion: monitoring.coreos.com/v1
+      kind: ServiceMonitor
+      metadata:
+        name: {{ .name }}
+      spec:
+        selector:
+          matchLabels:
+            app: {{ .label.app }}
+        endpoints:
+          - port: {{ .endpoints.port }}
+      {{ end }}