feat: add infinicore.nn.Module referencing torch.nn.Module and test case

Author: spike-zhu

test/infinicore/infinicore_nn_test.py

@@ -143,4 +143,4 @@ def forward(self, x):
     else:
         print("GPU 模式下输出存在差异.")
 else:
-    print("\n 未检测到 GPU，跳过 GPU 一致性测试。")
+    print("\n 未检测到 GPU，跳过 GPU 一致性测试。")