add idz repository layer

src/idz/decoder/saveStocker.ts

@@ -1,4 +1,8 @@
+import { bitmap } from "./_bitmap";
+import { chara } from "./_chara";
 import { RequestCode } from "./_defs";
+import { BackgroundCode, Id } from "../model/base";
+import { Profile } from "../model/profile";
 import { SaveStockerRequest } from "../request/saveStocker";
 
 saveStocker.msgCode = 0x00a6 as RequestCode;
@@ -7,6 +11,8 @@ saveStocker.msgLen = 0x00c0;
 export function saveStocker(buf: Buffer): SaveStockerRequest {
   return {
     type: "save_stocker_req",
-    profileId: buf.readUInt32LE(0x0004),
+    profileId: buf.readUInt32LE(0x0004) as Id<Profile>,
+    backgrounds: bitmap(buf.slice(0x0008, 0x002c)) as BackgroundCode[],
+    chara: chara(buf.slice(0x009e, 0x00b2)),
   };
 }