[IMM32][NTUSER] Implement ImmGetHotKey (#3025)

CORE-11700
- Implement imm32!ImmGetHotKey function.
- Modify NtUserGetImeHotKey function.
- Add LPHKL typedef into <imm.h> header.

win32ss/include/ntuser.h

@@ -2278,13 +2278,11 @@ NtUserGetIconSize(
     LONG *plcx,
     LONG *plcy);
 
-DWORD
-NTAPI
-NtUserGetImeHotKey(
-    DWORD Unknown0,
-    DWORD Unknown1,
-    DWORD Unknown2,
-    DWORD Unknown3);
+BOOL NTAPI
+NtUserGetImeHotKey(IN DWORD dwHotKey,
+                   OUT LPUINT lpuModifiers,
+                   OUT LPUINT lpuVKey,
+                   OUT LPHKL lphKL);
 
 DWORD
 NTAPI

win32ss/user/ntuser/ime.c

@@ -36,18 +36,15 @@ IntImmProcessKey(PUSER_MESSAGE_QUEUE MessageQueue, PWND pWnd, UINT Msg, WPARAM w
     return 0;
 }
 
-
-DWORD
-APIENTRY
-NtUserGetImeHotKey(
-   DWORD Unknown0,
-   DWORD Unknown1,
-   DWORD Unknown2,
-   DWORD Unknown3)
+BOOL WINAPI
+NtUserGetImeHotKey(IN DWORD dwHotKey,
+                   OUT LPUINT lpuModifiers,
+                   OUT LPUINT lpuVKey,
+                   OUT LPHKL lphKL)
 {
    STUB
 
-   return 0;
+   return FALSE;
 }
 
 DWORD