Add conda environment.yml (and fix requirements.txt) (openai#8)

* fix: more-itertools name in requirements.txt

* feature: minimal environment.yml for conda

* Revert "feature: minimal environment.yml for conda"

This reverts commit 8fd7438.

Co-authored-by: Jong Wook Kim <jongwook@nyu.edu>

Author: sradc

requirements.txt

@@ -1,6 +1,6 @@
 numpy
 torch
 tqdm
-more_itertools
+more-itertools
 transformers>=4.19.0
 ffmpeg-python==0.2.0