Expose and document various APIs of Visject for plugins to use

Source/Engine/Visject/VisjectGraph.h

@@ -101,7 +101,7 @@ public:
 /// Visject graph parameter.
 /// </summary>
 /// <seealso cref="GraphParameter" />
-API_CLASS() class VisjectGraphParameter : public GraphParameter
+API_CLASS() class FLAXENGINE_API VisjectGraphParameter : public GraphParameter
 {
     DECLARE_SCRIPTING_TYPE_WITH_CONSTRUCTOR_IMPL(VisjectGraphParameter, GraphParameter);
 public:

Source/Engine/Visject/VisjectMeta.cpp

@@ -5,10 +5,6 @@
 #include "Engine/Serialization/ReadStream.h"
 #include "Engine/Serialization/WriteStream.h"
 
-VisjectMeta::VisjectMeta()
-{
-}
-
 bool VisjectMeta::Load(ReadStream* stream, bool loadData)
 {
     Release();

Source/Engine/Visject/VisjectMeta.h

@@ -8,7 +8,7 @@
 /// <summary>
 /// Visject metadata container
 /// </summary>
-class VisjectMeta
+class FLAXENGINE_API VisjectMeta
 {
 public:
     /// <summary>
@@ -27,19 +27,6 @@ public:
     /// </summary>
     Array<Entry, FixedAllocation<8>> Entries;
 
-public:
-    /// <summary>
-    /// Initializes a new instance of the <see cref="VisjectMeta"/> class.
-    /// </summary>
-    VisjectMeta();
-
-    /// <summary>
-    /// Finalizes an instance of the <see cref="VisjectMeta"/> class.
-    /// </summary>
-    ~VisjectMeta()
-    {
-    }
-
 public:
     /// <summary>
     /// Load from the stream