Add NSIS plugin support and extraction functionality

- Implemented plugin API in `pluginapi.cpp` and `pluginapi.h` for NSIS integration.
- Added resource files `resource.h` and `resource.rc` for versioning and resource management.
- Created `ExtractCallbackConsole` class to handle extraction progress and user input.
- Developed main extraction logic in `Main.cpp` and `MainAr.cpp` for handling archives.
- Introduced user input utilities in `UserInputUtils2.cpp` and `UserInputUtils2.h` for password handling and user prompts.
- Added break signal handling in `NSISBreak.cpp` and `NSISBreak.h` for graceful interruption of extraction processes.
- Included standard header `StdAfx.h` for precompiled headers and common includes.

versions/zstd/CPP/7zip/UI/NSIS/UserInputUtils2.cpp

@@ -0,0 +1,60 @@
+// UserInputUtils.cpp
+
+#include "StdAfx.h"
+
+#include "Common/StdInStream.h"
+#include "Common/StringConvert.h"
+
+#include "UserInputUtils2.h"
+
+static const char kYes = 'Y';
+static const char kNo = 'N';
+static const char kYesAll = 'A';
+static const char kNoAll = 'S';
+static const char kAutoRename = 'U';
+static const char kQuit = 'Q';
+
+static const char *kFirstQuestionMessage = "?\n";
+static const char *kHelpQuestionMessage =
+  "(Y)es / (N)o / (A)lways / (S)kip all / A(u)to rename / (Q)uit? ";
+
+// return true if pressed Quite;
+// in: anAll
+// out: anAll, anYes;
+
+NUserAnswerMode::EEnum ScanUserYesNoAllQuit2(CStdOutStream *outStream)
+{
+  (*outStream) << kFirstQuestionMessage;
+  for(;;)
+  {
+    (*outStream) << kHelpQuestionMessage;
+	AString scannedString;
+	g_StdIn.ScanAStringUntilNewLine(scannedString);
+    scannedString.Trim();
+    if(!scannedString.IsEmpty())
+      switch(::MyCharUpper(scannedString[0]))
+      {
+        case kYes:
+          return NUserAnswerMode::kYes;
+        case kNo:
+          return NUserAnswerMode::kNo;
+        case kYesAll:
+          return NUserAnswerMode::kYesAll;
+        case kNoAll:
+          return NUserAnswerMode::kNoAll;
+        case kAutoRename:
+          return NUserAnswerMode::kAutoRename;
+        case kQuit:
+          return NUserAnswerMode::kQuit;
+      }
+  }
+}
+
+UString GetPassword(CStdOutStream *outStream)
+{
+  (*outStream) << "\nEnter password:";
+  outStream->Flush();
+  AString oemPassword;
+  g_StdIn.ScanAStringUntilNewLine(oemPassword);
+  return MultiByteToUnicodeString(oemPassword, CP_OEMCP);
+}