Add package validation workflow

.github/workflows/validate.yml

@@ -0,0 +1,62 @@
+name: Validate
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  client:
+    name: Client
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: src/TheBuilder.WebAnalytics/Client
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v7
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+
+      - name: Enable Corepack
+        run: corepack enable
+
+      - name: Install dependencies
+        run: corepack pnpm install --frozen-lockfile
+
+      - name: Test client
+        run: corepack pnpm test
+
+      - name: Build client
+        run: corepack pnpm build
+
+  dotnet:
+    name: .NET (Umbraco ${{ matrix.umbraco-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        umbraco-version:
+          - 17.1.0
+          - 18.0.0
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v7
+
+      - name: Set up .NET
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: 10.0.x
+
+      - name: Test package
+        run: dotnet test tests/TheBuilder.WebAnalytics.Tests/TheBuilder.WebAnalytics.Tests.csproj -p:UmbracoVersion=${{ matrix.umbraco-version }}
+
+      - name: Build example
+        run: dotnet build samples/TheBuilder.WebAnalytics.Example/TheBuilder.WebAnalytics.Example.csproj -p:UmbracoVersion=${{ matrix.umbraco-version }}