Feature request: Reflection API call to return instance name of interface block

[chaoticbob]

Currently, the reflection API returns the interface name for an interface block at a given index. Having a function that returns the instance name of an interface block (according to Vulkan rules) would be extremely helpful for tools that need query the shader information at run time. Thanks.

[arcady-lunarg]

@chaoticbob is this still needed or is the equivalent functionality available through spirv-reflect?