Add cancer_cell_nh2 dataset

cancer_cell_nh2/data/train-00000-of-00001.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6ab55612e4fed031b46630c92b0ebf595f290eb37f90ba924ecf4066d1dd537
+size 7987997

cancer_cell_nh2/metadata.json

@@ -0,0 +1,17 @@
+{
+  "target_names": [
+    "A",
+    "A-S",
+    "DMEM",
+    "DMEM-S",
+    "G",
+    "G-S",
+    "HF",
+    "HF-S",
+    "MEL",
+    "MEL-S",
+    "ZAM",
+    "ZAM-S"
+  ],
+  "task_type": 1
+}