Adding copyright (#53)

Summary:
## What does this PR do?
Fixes #52

## Before submitting

- [x] Was this discussed/approved via a Github issue? (no need for typos, doc improvements)
  - [ ] N/A
- [ ] Did you write any new necessary tests?
  - [x] N/A
- [ ] Did you make sure to update the docs?
  - [x] N/A
- [ ] Did you update the [changelog](https://github.com/facebookresearch/HolisticTraceAnalysis/blob/main/CHANGELOG.md)?
  - [x] N/A

Pull Request resolved: #53

Reviewed By: yifanliu112

Differential Revision: D45885390

Pulled By: anupambhatnagar

fbshipit-source-id: 3ef80b6902142917629ccdee9b783e850fca3fdf

examples/cupti_profiler_demo.py

@@ -1,3 +1,7 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 """
 Measuring CUPTI performanc metrics using CUPTI Profiler.
 This is supported on V100 and higher NVIDIA GPUs.