idz: Hoist userdb code

src/idz/userdb/decoder/createProfile.ts

@@ -0,0 +1,24 @@
+import iconv from "iconv-lite";
+
+import { car } from "./_car";
+import { chara } from "./_chara";
+import { CreateProfileRequest } from "../request/createProfile";
+import { AimeId } from "../../../model";
+
+createProfile.msgCode = 0x0066;
+createProfile.msgLen = 0x00c0;
+
+export function createProfile(buf: Buffer): CreateProfileRequest {
+  return {
+    type: "create_profile_req",
+    aimeId: buf.readInt32LE(0x0004) as AimeId,
+    luid: buf.slice(0x0008, buf.indexOf("\0", 0x0008)).toString("ascii"),
+    name: iconv.decode(
+      buf.slice(0x001e, buf.indexOf("\0", 0x001e)),
+      "shift_jis"
+    ),
+    field_0034: buf.readUInt32LE(0x0034),
+    car: car(buf.slice(0x0040, 0x00a0)),
+    chara: chara(buf.slice(0x00a0, 0x00b4)),
+  };
+}