shader: Implement LDS, STS, LDL, and STS and use SPIR-V 1.4 when available

src/shader_recompiler/frontend/ir/program.h

@@ -21,6 +21,8 @@ struct Program {
     Info info;
     Stage stage{};
     std::array<u32, 3> workgroup_size{};
+    u32 local_memory_size{};
+    u32 shared_memory_size{};
 };
 
 [[nodiscard]] std::string DumpProgram(const Program& program);