Add OpenGL Wrapper Library

[randomPoison]

Implement an OpenGL wrapper library like glutin or gfx-rs that simplifies working with OpenGL and makes doing so safer and more performant. This work has been started on the render_reform branch.

This specific task is for re-implementing the basic set of features that have been built in polygon:

• [x] Create vertex and index buffers and safely fill them with data.
• [x] Specify vertex attributes on the vertex buffer.
• [x] Draw arrays using a vertex buffer or draw elements with a vertex and index buffer.
• [x] Use a safe wrapper to specify various optional configuration values when drawing.
• [x] Safely create shaders from source strings and link them into program objects.
• [x] Connect shader variables to vertex buffer attributes.
• [x] Set values for shader uniforms.

Implementing texture support is not part of this task because it was not fully implemented previously.

[randomPoison]

This work is currently in progress on the render-reform branch.

[randomPoison]

Work is complete, just waiting on some integration work before it can be merged into master.