chore: enable renovate for component playground deps (#3016)

Author: sean-perkins

renovate.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:base", ":github>ionic-team/ionic-docs>"],
+  "packageRules": [
+    {
+      "matchPackagePatterns": ["^@ionic/"],
+      "groupName": "ionic",
+      "schedule": ["every thursday before 11am"]
+    },
+    {
+      "matchPackagePatterns": ["^@angular/"],
+      "groupName": "angular"
+    }
+  ],
+  "dependencyDashboard": true,
+  "minimumReleaseAge": "3 days",
+  "rebaseWhen": "never",
+  "schedule": ["every weekday before 11am"],
+  "semanticCommits": "enabled",
+  "ignorePaths": ["./package.json", "./package-lock.json", "./docusaurus-theme-classic"]
+}