Refactor llama_runner to use Module (#1488)

Summary:
Pull Request resolved: #1488

As titled, address comments on D52208223

Reviewed By: shoumikhin

Differential Revision: D52423347

fbshipit-source-id: 85f14cbaa8d13971838dd3058d2282a33fb373ee

Author: larryliu0820

extension/runner/module/targets.bzl

@@ -24,3 +24,21 @@ def define_common_targets():
             "//executorch/extension/runner:runner",
         ],
     )
+
+    runtime.cxx_library(
+        name = "module_aten",
+        srcs = [
+            "module.cpp",
+        ],
+        exported_headers = [
+            "module.h",
+        ],
+        visibility = [
+            "@EXECUTORCH_CLIENTS",
+        ],
+        exported_deps = [
+            "//executorch/extension/memory_allocator:malloc_memory_allocator",
+            "//executorch/extension/data_loader:mmap_data_loader",
+            "//executorch/extension/runner:runner_aten",
+        ],
+    )