feat: migrate existing configs (#1)

Reviewed-on: #1
Reviewed-by: branch-buddy <branch-buddy@t00n.de>
Co-authored-by: Timo Behrendt <t.behrendt@t00n.de>
Co-committed-by: Timo Behrendt <t.behrendt@t00n.de>

helm.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "helm-values": {
+    "fileMatch": ["(^|/)values/.*\\.ya?ml$", "(^|/)values/.*\\.ya?ml\\.gotmpl$"]
+  },
+  "packageRules": [
+    {
+      "matchManagers": ["helm-values"],
+      "versioning": "docker",
+      "separateMinorPatch": true
+    }
+  ],
+  "helmfile": {
+    "enabled": true,
+    "addLabels": ["deps", "helm"]
+  }
+}