idz: Hoist userdb code

src/idz/userdb/decoder/load2on2.ts

@@ -0,0 +1,30 @@
+import { ExtId } from "../model/base";
+import { Team } from "../model/team";
+import { Load2on2Request1, Load2on2Request2 } from "../request/load2on2";
+import { AimeId } from "../../../model";
+
+load2on2_v1.msgCode = 0x00b0;
+load2on2_v1.msgLen = 0x0010;
+
+export function load2on2_v1(buf: Buffer): Load2on2Request1 {
+  return {
+    type: "load_2on2_req",
+    format: 1,
+    field_0002: buf.readUInt16LE(0x0002),
+    aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    teamId: buf.readUInt32LE(0x0008) as ExtId<Team>,
+  };
+}
+
+load2on2_v2.msgCode = 0x0132;
+load2on2_v2.msgLen = 0x0010;
+
+export function load2on2_v2(buf: Buffer): Load2on2Request2 {
+  return {
+    type: "load_2on2_req",
+    format: 2,
+    field_0002: buf.readUInt16LE(0x0002),
+    aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    teamId: buf.readUInt32LE(0x0008) as ExtId<Team>,
+  };
+}