[Flint] adding IR lowering and printer

[IR] switching from "passes" to "transformers" for clarity

src/intel/compiler/ir/id.zig

@@ -0,0 +1,14 @@
+const shared_ids = @import("shader_ir").ir.id;
+
+pub const BlockTag = opaque {};
+pub const InstructionTag = opaque {};
+pub const VirtualRegisterTag = opaque {};
+pub const VirtualFlagTag = opaque {};
+
+pub const BlockId = shared_ids.Id(BlockTag);
+pub const InstructionId = shared_ids.Id(InstructionTag);
+pub const VirtualRegisterId = shared_ids.Id(VirtualRegisterTag);
+pub const VirtualFlagId = shared_ids.Id(VirtualFlagTag);
+
+pub const Id = shared_ids.Id;
+pub const Store = shared_ids.Store;