subsystem: cleanup misc and make cpp a subsystem

Move a way from misc/ and put in its own subsystem to allow enhancements
in the future and make it a core part of Zephyr, not just something
misc.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

subsys/cpp/cpp_vtable.cpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2015 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * @file
+ * @brief Stub for C++ virtual tables
+ */
+
+/**
+ *
+ * @brief basic virtual tables required for classes to build
+ *
+ */
+
+namespace __cxxabiv1 {
+	class __class_type_info {
+		virtual void dummy();
+	};
+	class __si_class_type_info {
+		virtual void dummy();
+	};
+	void __class_type_info::dummy() { }  // causes the vtable to get created here
+	void __si_class_type_info::dummy() { }  // causes the vtable to get created here
+};