Added missing OpenGL 3.0-3.3 functions to wrapper

* added `ColorMask` packed struct is also used by  `clear` in OpenGL 1.0,
* added `DrawIndicesType` enum that is now used by `*Draw*Elements*` functions
* split `FramebufferAttachment` into two enums, since some functions do not allow referencing attachments of a `default` framebuffer,
* added missing members to `BufferTarget`,
* fixed a function name `bindbufferRange` -> `bindBufferRange` in OpenGL 3.0,
* removed incorrectly merged enum for `getInteger64v` (to access atomic count buffer `start` and `size`, use `getInteger64i_v`).

Author: LukaTD