Merge pull request #11 from dafyddj/feat/group-manager

feat: add "group by manager" preset

Author: dafyddj

groupManager.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "description": "Group non-major updates by manager",
+  "packageRules": [
+    {
+      groupName: "`{{arg0}}` non-major {{arg1}}",
+      matchManagers: [
+        "{{arg0}}"
+      ],
+      matchUpdateTypes: [
+        "digest",
+        "minor",
+        "patch"
+      ]
+    }
+  ]
+}