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>

src/mbgl/vulkan/vertex_buffer_resource.cpp

@@ -0,0 +1,26 @@
+#include <mbgl/vulkan/vertex_buffer_resource.hpp>
+
+#include <mbgl/vulkan/context.hpp>
+
+namespace mbgl {
+namespace vulkan {
+
+VertexBufferResource::VertexBufferResource(BufferResource&& ptr) noexcept
+    : buffer(std::move(ptr)) {
+    if (buffer) {
+        auto& stats = buffer.getContext().renderingStats();
+        stats.numVertexBuffers++;
+        stats.memVertexBuffers += buffer.getSizeInBytes();
+    }
+}
+
+VertexBufferResource::~VertexBufferResource() noexcept {
+    if (buffer) {
+        auto& stats = buffer.getContext().renderingStats();
+        stats.numVertexBuffers--;
+        stats.memVertexBuffers -= buffer.getSizeInBytes();
+    }
+}
+
+} // namespace vulkan
+} // namespace mbgl