add rules generate script

src/rules.js

@@ -0,0 +1,17 @@
+import fs from "fs";
+import path from "path";
+import { BUILTIN_RULES } from "./config/rules";
+
+(() => {
+  try {
+    const data = JSON.stringify(BUILTIN_RULES, null, "  ");
+    const file = path.resolve(
+      __dirname,
+      "../build/web/kiss-translator-rules.json"
+    );
+    fs.writeFileSync(file, data);
+    console.info(`Built-in rules generated: ${file}`);
+  } catch (err) {
+    console.error(err);
+  }
+})();