Add FBX Integration Support

 * Added a FBXImport helper class. It imports an FBX file and writes to a text file FBX FbxNode and FbxNodeAttribute data.
   We must create a scene/mesh data in order to copy FbxScene into it.

 * Added ThirdParty folder to ignore list due to big .lib files. I'll add support to download these ThirdParty dependencies from a zip in the project page.