wip: working on generator

- Feat: add typedefs' branches

src/compiler/generator/gen_reference.c

@@ -0,0 +1,23 @@
+#include <common/fzl_extern.h>
+#include <compiler/fzl_token.h>
+#include <compiler/internals/gen.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+// Type reference (convert T => T*)
+bool gen_reference(fzl_gen_t *gen, fzl_node_t *node)
+{
+  if (!gen || !node)
+    return false;
+
+  char *refname = (char *)node->token->value;
+  ssize_t slot  = gen_resolve_extern_type(gen, refname);
+  if (slot == -1)
+    return false;
+
+  type_buf.kind = FZL_EXTERN_KIND_REF;
+  type_buf.ref_target =
+      (fzl_extern_type_ref_t){.is_primitive = false, .type_slot = slot};
+
+  return true;
+}