Compute memory/ephemeral-storage limits from requests, drop default CPU limits

Every chart now renders its container resources through a duplicated
_helpers.tpl helper (reference implementation in template-chart): requests
ship as chart defaults, missing memory and ephemeral-storage limits are
computed as resources.limitFactor x the request (default 3, satisfactory
keeps 2 to preserve its previously published 8Gi limit), an explicitly set
limit always wins, and a CPU limit is only rendered when set explicitly.
Fixed limit defaults are removed from all values.yaml files; teamspeak-server
gains a values-driven resources block instead of hardcoded template values.
Major version bump for all published charts.

teamspeak-server/templates/teamspeak-server.sfs.yaml

@@ -57,14 +57,7 @@ spec:
             timeoutSeconds: 5
             failureThreshold: 30
           resources:
-            requests:
-              cpu: "0.2"
-              memory: "100Mi"
-              ephemeral-storage: "100Mi"
-            limits:
-              cpu: "0.5"
-              memory: "200Mi"
-              ephemeral-storage: "200Mi"
+            {{- include "teamspeak-server.resources" .Values.resources | nindent 12 }}
           volumeMounts:
             - name: "teamspeak-volume"
               mountPath: /var/tsserver/