chore(renovate): add Renovate frontend overlay config

.github/renovate.json

@@ -0,0 +1,61 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "enabledManagers": ["nuget", "npm"],
+  "minimumReleaseAge": "3 days",
+  "internalChecksFilter": "strict",
+  "packageRules": [
+    {
+      "description": [
+        "Do not open major or replacement PRs until approved on the dashboard"
+      ],
+      "matchUpdateTypes": ["major", "replacement"],
+      "dependencyDashboardApproval": true
+    },
+    {
+      "description": ["Group non-major nuget updates"],
+      "matchManagers": ["nuget"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "groupName": "nuget minor and patch"
+    },
+    {
+      "description": [
+        "Keep ASP.NET Core, EF Core, and dotnet-ef majors together"
+      ],
+      "matchPackageNames": [
+        "Microsoft.AspNetCore{/,}**",
+        "Microsoft.EntityFrameworkCore{/,}**",
+        "dotnet-ef"
+      ],
+      "matchUpdateTypes": ["major"],
+      "groupName": "aspnetcore and ef core"
+    },
+    {
+      "description": ["Keep AWS SDK majors together"],
+      "matchPackageNames": ["/^AWSSDK\\./"],
+      "matchUpdateTypes": ["major"],
+      "groupName": "aws sdk"
+    },
+    {
+      "description": ["Keep xunit and the VS test SDK together"],
+      "matchPackageNames": [
+        "xunit",
+        "xunit.{/,}**",
+        "Microsoft.NET.Test.Sdk"
+      ],
+      "matchUpdateTypes": ["major"],
+      "groupName": "xunit"
+    },
+    {
+      "description": ["Keep FluentValidation packages together"],
+      "matchPackageNames": ["FluentValidation{/,}**"],
+      "matchUpdateTypes": ["major"],
+      "groupName": "fluentvalidation"
+    },
+    {
+      "description": ["Keep aws-cdk and aws-cdk-lib together"],
+      "matchPackageNames": ["aws-cdk", "aws-cdk-lib"],
+      "matchUpdateTypes": ["major"],
+      "groupName": "aws cdk"
+    }
+  ]
+}