ignore the copied files (#197)

Summary:
Pull Request resolved: #197

As title, new copied files were added in D48768255

Reviewed By: tarun292

Differential Revision: D48894171

fbshipit-source-id: 880a1a73abfe7281685a42ca47dcd2fbb63de523

Author: cccclai

.gitignore

@@ -7,6 +7,8 @@ __pycache__/
 build/lib/
 exir/serialize/scalar_type.fbs
 exir/serialize/program.fbs
+bundled_program/serialize/bundled_program_schema.fbs
+bundled_program/serialize/scalar_type.fbs
 
 # Any exported models
 *.pte