Core: Add BC1 tests for texture updates from buffer

Core: add specialization constants (API 256014)

Tools: update render state notation device feature parser test to use SpecializationConstants

Core/HashMapStringKey: detect dangling string keys in debug builds

Core: replaced EngineCreateInfo::pRawMemAllocator with IEngineFactory…

…::SetMemoryAllocator() (API256011)

Also added SetMemoryAllocator method to IArchiverFactory

Core: a few minor fixes

Samples/GLFW Demo: fixed image format mismatch Vulkan validation warning

Improved sRGB textures handling in PBR renderer

Samples: make the sample release swap chain buffers when updating the…

… swap chain (#277)

Enabled OpenXR (API256002)

Enabled OpenXR (API256002)