Export the four Win32 names the new code declares

⚠️ The same guard that caught NtLockFile one release ago: "declared in src/*.h
and exported by no .def". Declaring a function this environment provides is half
of it; saying which library it comes from is the other half, and omitting it
still LINKS through a synthesised thunk --- which is why the check exists rather
than being left to the linker.

Author: Sunrisepeak

port/kernel32.def

@@ -44,6 +44,10 @@ SetHandleInformation
 Sleep
 SwitchToThread
 TerminateProcess
+CreateJobObjectW
+AssignProcessToJobObject
+TerminateJobObject
+SetConsoleCtrlHandler
 VirtualAlloc
 VirtualFree
 VirtualProtect