Configure Renovate (#91)

* Add renovate.json

* update default renovate config

* move renovate config file to .json5

* fix renovate schedule

* remove renovate schedule

* group packages together

* add dependency dashboard

* require dashboard approval for major node updates

* turn off prs for patch updates

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Alice Rose <alice.rose@ecosia.org>

renovate.json5

@@ -0,0 +1,56 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:base",
+    ":dependencyDashboard"
+  ],
+  "prConcurrentLimit": 3, // only three PRs can be open at a time.
+  "timezone": "Europe/Berlin",
+  // Add some custom labels
+  // - {{manager}} adds the name of the manager used (https://docs.renovatebot.com/modules/manager/)
+  "labels": [
+    "dependencies",
+    "{{manager}}"
+  ],
+  // Group package updates together in one PR
+  "packageRules": [
+    {
+      "matchPackagePatterns": ["^eslint", "^babel-eslint$"],
+      "groupName": "eslint packages"
+    },
+    {
+      "matchPackagePatterns": ["^jest", "^babel-jest$"],
+      "groupName": "jest packages"
+    },
+    {
+      "matchPackagePatterns": ["^@babel"],
+      "groupName": "@babel packages"
+    },
+    {
+      "matchPackagePatterns": ["^webpack", "^babel-loader$"],
+      "groupName": "webpack packages"
+    },
+    {
+      "matchPackagePatterns": ["^vue[^3]", "^@vue/test-utils$"],
+      "groupName": "vue2 packages"
+    },
+    {
+      "matchPackagePatterns": ["^vue3$", "^@vue/test-utils3$"],
+      "groupName": "vue3 packages"
+    },
+    {
+      "matchPackagePatterns": ["^node$"],
+      "groupName": "node",
+      "major": {
+        "dependencyDashboardApproval": true
+      }
+    }
+  ],
+  "patch": {
+    "enabled": false
+  },
+  "assignees": [
+    "axlwaii",
+    "heldinz"
+  ]
+}