feat: Register spec to build submodules

Author: JYMiracle305

CMakeLists.txt

@@ -178,14 +178,14 @@ add_executable(gpt2
 )
 link_infini_train_exe(gpt2)
 
-# add_executable(llama3
-#   example/llama3/main.cc
-#   example/common/tiny_shakespeare_dataset.cc
-#   example/common/utils.cc
-#   example/llama3/net.cc
-#   example/common/tokenizer.cc
-# )
-# link_infini_train_exe(llama3)
+add_executable(llama3
+  example/llama3/main.cc
+  example/common/tiny_shakespeare_dataset.cc
+  example/common/utils.cc
+  example/llama3/net.cc
+  example/common/tokenizer.cc
+)
+link_infini_train_exe(llama3)
 
 # Tools
 add_subdirectory(tools/infini_run)