idz: Remove profile ext id

Turns out (while researching team creation) the profile ext id
is just the aime id. After creating a team a profile discovery
request is immediately issued with the "profile id" in the field
that holds the aime id during initial profile load.

src/idz/decoder/loadGacha.ts

@@ -1,7 +1,6 @@
 import { RequestCode } from "./_defs";
 import { LoadGachaRequest } from "../request/loadGacha";
-import { ExtId } from "../model/base";
-import { Profile } from "../model/profile";
+import { AimeId } from "../../model";
 
 loadGacha.msgCode = 0x00c1 as RequestCode;
 loadGacha.msgLen = 0x0010;
@@ -9,6 +8,6 @@ loadGacha.msgLen = 0x0010;
 export function loadGacha(buf: Buffer): LoadGachaRequest {
   return {
     type: "load_gacha_req",
-    profileId: buf.readUInt32LE(0x0004) as ExtId<Profile>,
+    aimeId: buf.readUInt32LE(0x0004) as AimeId,
   };
 }