chore: Configure Renovate (#130)

* Add renovate.json

* chore: update renovate configuration

Add recommended config extension, dependency labels, and package
rules for major updates and go dependencies. Enable automerge
and platform automerge options.

* chore(renovate): update configuration for PR limits and automerge

Add ':prHourlyLimitNone' and ':rebaseStalePrs' to extends. Set major
automerge to false and add 'gomodTidy' to postUpdateOptions. Add
'main' to baseBranches. Enable lockFileMaintenance with automerge
settings.

---------

Co-authored-by: Maxence Maireaux <maxence@maireaux.fr>

Author: NumaryBot

renovate.json

@@ -0,0 +1,31 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended",
+    ":prHourlyLimitNone",
+    ":rebaseStalePrs"
+  ],
+  "major": {
+    "automerge": false
+  },
+  "postUpdateOptions": ["gomodTidy"],
+  "labels": ["dependencies"],
+  "baseBranches": ["main"],
+  "packageRules": [
+    {
+      "matchUpdateTypes": ["major"],
+      "matchBaseBranches": ["main"],
+      "enabled": false
+    },
+    {
+      "matchDepNames": ["golang", "go"],
+      "groupName": "go"
+    }
+  ],
+  "lockFileMaintenance": {
+    "enabled": true,
+    "automerge": true,
+    "automergeType": "pr",
+    "platformAutomerge": true
+  }
+}