Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/Data/include/Poco/Data/DynamicDateTime.h

@@ -0,0 +1,47 @@
+//
+// DynamicDateTime.h
+//
+// Library: Data
+// Package: DataCore
+// Module:  DynamicDateTime
+//
+// Definition of the Date and Time cast operators for Poco::Dynamic::Var.
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Data_DynamicDateTime_INCLUDED
+#define Data_DynamicDateTime_INCLUDED
+
+
+#include "Poco/Data/Data.h"
+#include "Poco/Data/Date.h"
+#include "Poco/Data/Time.h"
+#include "Poco/Dynamic/Var.h"
+
+
+namespace Poco {
+namespace Data {
+
+class Date;
+class Time;
+
+} } // namespace Poco::Data
+
+
+namespace Poco {
+namespace Dynamic {
+
+
+template <> Data_API Var::operator Poco::Data::Date () const;
+template <> Data_API Var::operator Poco::Data::Time () const;
+
+
+} } // namespace Poco::Dynamic
+
+
+#endif // Data_DynamicDateTime_INCLUDED