Add CMake build for ModelBuilder project

Update bazel file to allow bazel_to_cmake to work. Add few workarounds
for dynamic library not working with the script.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d9d802d..73e6c68 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -269,6 +269,11 @@
     set(CMAKE_BUILD_TYPE "Debug")
   endif()
 
+  # experimental model builder uses vulkan runner.
+  if(${IREE_BUILD_EXPERIMENTAL})
+    set(MLIR_VULKAN_RUNNER_ENABLED ON)
+  endif()
+
   add_subdirectory("${llvm_monorepo_path}/llvm" "third_party/llvm-project/llvm" EXCLUDE_FROM_ALL)
 
   # Reset CMAKE_BUILD_TYPE to its previous setting