Describe the pull request

This PR improves how descriptors and buffers are defined. The DescriptorTypes have been changed to reflect how they are defined in HLSL, making it more straightforward to define descriptors manually. The GLSL counterparts are mentioned in the documentation. A new descriptor type for ByteAddressBuffers has been added. The descriptor set builder interface has also been updated to reflect those changes.

This PR also adds support for unbounded descriptor arrays to support bindless descriptors. Note that when using this feature, care must be taken not to exceed any device limitations. Some restrictions are:

• There must only be one unbounded array in a descriptor set. Descriptor sets that declare unbounded arrays must not contain any other descriptors.
• The number of descriptors in an unbounded array is provided by the application when allocation the descriptor set.
• The maximum number of descriptors in an unbounded array still must be provided when creating the descriptor layout. Currently this is set to a default value of 104.857. This value can be increased, however there is an overall device-specific upper limit for such descriptor sets.

Related issues

• Closes Support bind-less descriptor arrays. #72

To-Do

• Update documentation and readme