Add GitHub workflow to scan project with CodeQL

- Set up CodeQL analysis workflow to scan both the Kubebuilder CLI and generated projects in 'testdata'.
- Run 'make install' in the root directory to build and install the Kubebuilder CLI as part of the setup.
- For sample projects in 'testdata' (e.g., project-v4, project-v4-multigroup, and project-v4-with-plugins), add a step to run 'make all' to ensure all resources are generated and ready for analysis.
- Configure the manual build mode for Go projects in 'testdata' to run 'make manifests' and 'make build' if autobuild is insufficient.

.github/workflows/codeql.yml

@@ -0,0 +1,79 @@
+name: "CodeQL Advanced"
+
+on:
+  # We are checking master and book-v4 because book-v4 has always the code
+  # from the latest release
+  push:
+    branches: ["master", "book-v4"]
+  pull_request:
+    branches: ["master", "book-v4"]
+  schedule:
+    - cron: '30 20 * * 1'  # Runs a periodic scan every Monday at 8:30 PM
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      packages: read
+      actions: read
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: go
+            build-mode: autobuild
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Set up Go environment for Kubebuilder projects
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.22'
+
+      # Install Kubebuilder tools, specifically Kustomize v5.5.0 and controller-gen
+      - name: Install Kubebuilder tools
+        run: |
+          go install sigs.k8s.io/controller-tools/cmd/[email protected]
+          go install sigs.k8s.io/kustomize/kustomize/[email protected]
+
+      # Run `make install` to install Kubebuilder CLI
+      - name: Build and install Kubebuilder CLI
+        run: make install
+
+      # Build and prepare resources in each sample project under testdata
+      - name: Build sample projects in testdata
+        run: |
+          for dir in testdata/*; do
+            if [ -d "$dir" ]; then
+              (cd "$dir" && make all)
+            fi
+          done
+
+      # Initialize CodeQL analysis for the specified languages
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+
+      # Manual build mode for Go in generated projects only, if autobuild is insufficient
+      - if: matrix.language == 'go' && matrix.build-mode == 'manual'
+        shell: bash
+        run: |
+          for dir in testdata/*; do
+            if [ -d "$dir" ]; then
+              (cd "$dir" && echo 'Running manual build commands for Go in sample project' && make manifests && make build)
+            fi
+          done
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{matrix.language}}"