dialog: implement common dialog usage query

src/libs/dialog.cpp

@@ -21,6 +21,12 @@ int KYTY_SYSV_ABI CommonDialogInitialize() {
 	return OK;
 }
 
+bool KYTY_SYSV_ABI CommonDialogIsUsed() {
+	PRINT_NAME();
+
+	return false;
+}
+
 } // namespace CommonDialog
 
 namespace LoginDialog {

src/libs/dialog.h

@@ -8,7 +8,8 @@ namespace Libs::Dialog {
 
 namespace CommonDialog {
 
-int KYTY_SYSV_ABI CommonDialogInitialize();
+int KYTY_SYSV_ABI  CommonDialogInitialize();
+bool KYTY_SYSV_ABI CommonDialogIsUsed();
 
 } // namespace CommonDialog
 

src/libs/libDialog.cpp

@@ -14,6 +14,7 @@ namespace CommonDialog = Dialog::CommonDialog;
 
 LIB_DEFINE(InitDialog_1_CommonDialog) {
 	LIB_FUNC("uoUpLGNkygk", CommonDialog::CommonDialogInitialize);
+	LIB_FUNC("BQ3tey0JmQM", CommonDialog::CommonDialogIsUsed);
 }
 
 } // namespace LibCommonDialog