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.

rallly/templates/rallly.deployment.yaml

@@ -131,7 +131,7 @@ spec:
           startupProbe:
             {{ toYaml .Values.rallly.startupProbe | nindent 12}}
           resources:
-            {{ toYaml .Values.rallly.resources | nindent 12 }}
+            {{- include "rallly.resources" .Values.rallly.resources | nindent 12 }}
           securityContext:
             allowPrivilegeEscalation: false
             readOnlyRootFilesystem: true