Add JailEntity class (#630)

* Add JailEntity class

* Update legoobjectfactory.h

* Update jailentity.h

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/lego/legoomni/include/jailentity.h

@@ -0,0 +1,29 @@
+#ifndef JAILENTITY_H
+#define JAILENTITY_H
+
+#include "buildingentity.h"
+
+// VTABLE: LEGO1 0x100d5200
+// SIZE 0x68
+class JailEntity : public BuildingEntity {
+	// FUNCTION: LEGO1 0x1000f0c0
+	inline const char* ClassName() const override // vtable+0x0c
+	{
+		// STRING: LEGO1 0x100f0300
+		return "RaceStandsEntity";
+	}
+
+	// FUNCTION: LEGO1 0x1000f0d0
+	inline MxBool IsA(const char* p_name) const override // vtable+0x10
+	{
+		return !strcmp(p_name, JailEntity::ClassName()) || BuildingEntity::IsA(p_name);
+	}
+
+	// STUB: LEGO1 0x100154f0
+	MxLong VTable0x50(MxParam& p_param) override { return 0; }
+
+	// SYNTHETIC: LEGO1 0x1000fac0
+	// JailEntity::`scalar deleting destructor'
+};
+
+#endif // JAILENTITY_H