Update espidf.py

Author: Jason2866

builder/frameworks/espidf.py

@@ -2046,6 +2046,7 @@ def idf_lib_copy(source, target, env):
         for folder in src:
             files = [join(folder,x) for x in os.listdir(folder)]
             for file in files:
+                print("new lib file to copy:", file)
                 if file.strip().endswith(".a"):
                     shutil.copyfile(file,join(lib_dst,file.split(os.path.sep)[-1]))