|SOURCE|
[Common::Renderer::Font]
* Added chunk types for the font glyph and texture to be used when reading the
  font file
* ReadChunk passes the chunk type and size to be verified into member functions
  specialised for each chunk type
[Common::System::DataTypes]
* Added ZED_LASTCHUNKREAD to be used as a return status for ReadChunk in
  Renderer's Font class
[Common::Renderer::GLFont]
* Stubbed-out the ReadChunk member function to return ZED_OK for valid types,
  ZED_LASTCHUNKREAD for the final chunk, and ZED_FAIL for unrecognised ones
* Added a loop to read the remaining bytes in the font file