Plugin system

Plugin system added to dge.

Developed Plugins:

• Assimp for model loading
• DevIL for texture loading
• DDS loader, fast and cheap plugin for loading dds files

Assimp plugin in action, loaded knight.md2 model

Textures

i wrote a .dss loader for dge without using any 3D party library. and I 'm implement compressed textures in OpenGL renderer

for implementing virtual texture in engine I must write a basic scene manager and some basic scene nodes like as camera and static meshes.

loaded compressed texture (with format DXT1) in OpenGL 3.x renderer