Add support for handling exceptions while using the std::filesystem::recursive_directory_iterator (#27)

src/rocjpeg_vaapi_decoder.h

@@ -33,8 +33,10 @@ THE SOFTWARE.
 #include <unistd.h>
 #if __cplusplus >= 201703L && __has_include(<filesystem>)
     #include <filesystem>
+    namespace fs = std::filesystem;
 #else
     #include <experimental/filesystem>
+    namespace fs = std::experimental::filesystem;
 #endif
 #include <unordered_map>
 #include <memory>