ci: introduce v benchmarks inside the ci workflow (#13949)

.github/workflows/ci_v_benchmark.yml

@@ -0,0 +1,35 @@
+name: vlang benchmarks
+
+on:
+  push:
+    paths-ignore:
+      - "**.md"
+  pull_request:
+    paths-ignore:
+      - "**.md"
+
+jobs:
+  run:
+    name: Run
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Install google benchmark
+      run: |
+          git clone https://github.com/google/benchmark.git
+          cd benchmark
+          cmake -E make_directory "build"
+          cmake -E chdir "build" cmake -DBENCHMARK_DOWNLOAD_DEPENDENCIES=on -DCMAKE_BUILD_TYPE=Release ../
+          sudo cmake --build "build" --config Release --target install
+    - name: Run V benchmark
+      run: |
+        make
+        sudo ./v symlink
+        git clone https://github.com/vincenzopalazzo/benchmarks.git
+        cd benchmarks
+        make vdep && make v
+    - uses: actions/upload-artifact@v3
+      with:
+        name: vlang-benchmark
+        path: benchmarks/vlang/*.json