This PR adds routes for the asset images, so they are not needed to be copied into the source directory. Copying generated files into source directory should be avoided, because hexo clean can't remove those files and the user has to mange them manually.
This PR adds routes for the asset images, so they are not needed to be copied into the
sourcedirectory. Copying generated files intosourcedirectory should be avoided, becausehexo cleancan't remove those files and the user has to mange them manually.