add default rule for UA

// LICENSE : MIT
"use strict";
export default [
    {
        id: 1,
        name: "textlint-rule-no-todo",
        rule: require("textlint-rule-no-todo"),
        enable: true
    },
    {
        id: 2,
        name: "textlint-rule-sjsj(Simplified JavaScript Jargon)",
        rule: require("textlint-rule-sjsj"),
        enable: true
    }
];

Current default rule list is less. 😢
I think that add some rule for specific language(e.g. japanese)
It means detect UA and add some rule as default.

The issue provides no file, test, or entry point; begin by locating the website's default rule list and the existing language or user-agent detection logic. Determine which language-specific rules should be enabled and how the default selection is verified; done means the appropriate rules are selected automatically without changing unrelated defaults.