Add Myanmar (my) language data: 2M samples in same format

Adds Myanmar language coding Q&A samples in the same schema as existing English data.
- 2,000,000 new rows
- language='my'
- Original English data preserved unchanged
- Files: data/train-my-00000-of-00002.parquet, data/train-my-00001-of-00002.parquet

data/train-my-00000-of-00002.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:82fa97a045a3e58a2a7b37769f898aebb29eb9ab42211efa82a485119e771977
+size 1031582

data/train-my-00001-of-00002.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6694eb526e1eed207eb80fdc135e81883180c459f6806f477d343523312eb903
+size 1031592