vulkan: initial loader and null driver

Change-Id: Id5ebb5f01e61e9b114990f49c64c88fbbb7b730e
(cherry picked from commit 4df205cdfc61e66de774ba50be9ef59a08cf88bb)
diff --git a/vulkan/.clang-format b/vulkan/.clang-format
new file mode 100644
index 0000000..563cd9a
--- /dev/null
+++ b/vulkan/.clang-format
@@ -0,0 +1,2 @@
+BasedOnStyle: Chromium
+IndentWidth: 4