refactor a bit more

handlers.ts

@@ -1,5 +1,5 @@
 import { sock } from "./server.js";
-import { Commands, CommandsByValue } from "./func_replacements.js";
+import { ControlCommands, Commands, CommandsByValue } from "./datatypes.js";
 import { createWriteStream } from "node:fs";
 import { SendUsrAck, SendUsrChk, create_P2pRdy } from "./impl.js";
 
@@ -97,11 +97,6 @@ const deal_with_data = (dv: DataView) => {
   }
 };
 
-const ControlCommands = {
-  ConnectUser: 0x2010,
-  ConnectUserAck: 0x2011,
-};
-
 const makeDrwAck = (dv: DataView): DataView => {
   const pkt_id = dv.add(6).readU16();
   const m_stream = dv.add(5).readU8(); // data = 1, control = 0