Vulkan renderer backend (#2564)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Bart Louwers <bart.louwers@gmail.com>

.github/workflows/linux-ci.yml

@@ -50,7 +50,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        renderer: [legacy, drawable]
+        renderer: [legacy, drawable, vulkan]
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
@@ -83,7 +83,8 @@ jobs:
             libpng-dev \
             libglfw3-dev \
             libwebp-dev \
-            libopengl0
+            libopengl0 \
+            mesa-vulkan-drivers
 
       - if: matrix.renderer == 'drawable'
         run: echo renderer_flag_cmake=-DMLN_DRAWABLE_RENDERER=ON >> "$GITHUB_ENV"
@@ -91,6 +92,9 @@ jobs:
       - if: matrix.renderer == 'legacy'
         run: echo renderer_flag_cmake=-DMLN_LEGACY_RENDERER=ON >> "$GITHUB_ENV"
 
+      - if: matrix.renderer == 'vulkan'
+        run: echo renderer_flag_cmake="-DMLN_DRAWABLE_RENDERER=ON -DMLN_LEGACY_RENDERER=OFF -DMLN_WITH_VULKAN=ON -DMLN_WITH_OPENGL=OFF" >> "$GITHUB_ENV"
+
       - name: Build MapLibre Native Core
         env:
           CI: 1
@@ -143,6 +147,7 @@ jobs:
       - run: chmod +x build/mbgl-test-runner
 
       - name: Run C++ tests
+        continue-on-error: ${{ matrix.renderer == 'vulkan' }}
         run: xvfb-run -a build/mbgl-test-runner
 
       # render tests