enable vulkan api 1.1

[nihui]

• vulkan 1.1 entry point
• enable vulkan 1.1 when supported
• get subgroup info
• drop offline spirv
• [ ] find glslang cmake module
• glsl macro for vulkan 1.1 subgroup
• option for enable vulkan subgroup
• adapt shaderinfo for storage buffer type
• let local size be multiple of subgroup size
• monolithic or embedded glslang

[nihui]

move to #2191