Something about anti-censorship. Note to users, if you ever feel the
GFW, try something like this:

    "splithttpSettings": {
        "responseOkPadding": "1-100"
    }

The clientside part has been implemented in XTLS@8320732

The setting defaults to "no padding". Using the setting with any value
that is not `0` will break compatibility with Xray client 1.8.16.

At the moment I think it's not worth it to break compatibility, and
until this feature is targeted, I think most clients will have updated
beyond 1.8.16.