Bazel build with OpenCV 3.3 dependencies

Ok, shame on me. I have to import *.h :

cc_library(
    name = "opencv",
    srcs = glob(["lib/*.so*"]),
    hdrs = glob(["include/**/*.hpp", "include/**/*.h"]),
    includes = ["include"],
    visibility = ["//visibility:public"], 
    linkstatic = 1,
)