Add new CI job to verify version in files match Git tag name (#61)

This commit adds a new job to the GitHub Actions workflow that verifies
that the version specified in the CMakeLists.txt and vcpkg.json files
matches the version from Git tag name. It will run only when a tag is
pushed.

Author: RippeR37

.github/workflows/ubuntu.yml

@@ -165,3 +165,27 @@ jobs:
           path: install
           retention-days: 7
         continue-on-error: true
+
+  # Verify release (tag push)
+  release-tests:
+    if: startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Verify versions
+      run: |
+        TAG_VERSION="${GITHUB_REF#refs/tags/v}"
+        CMAKE_VERSION=$(tr -d '\n' < CMakeLists.txt | grep -oP 'project\([^()]*VERSION\s+\K[0-9]+\.[0-9]+\.[0-9]+' | head -n 1)
+        VCPKG_VERSION=$(jq -r '.version' vcpkg.json)
+
+        if [[ "$TAG_VERSION" != "$CMAKE_VERSION" ]]; then
+          echo "::error::Git tag version ($TAG_VERSION) does not match CMakeLists.txt version ($CMAKE_VERSION)"
+          EXIT_CODE=1
+        fi
+        if [[ "$TAG_VERSION" != "$VCPKG_VERSION" ]]; then
+          echo "::error::Git tag version ($TAG_VERSION) does not match vcpkg.json version ($VCPKG_VERSION)"
+          EXIT_CODE=1
+        fi
+        exit $EXIT_CODE