Add/update dataset metadata

dataset.json

@@ -0,0 +1,6 @@
+{
+  "dataset": "code-search-net/code_search_net",
+  "subset": null,
+  "cache_dir": "C:\\Users\\Sean Smith\\Documents\\Scraps\\Knowledge\\Mothership\\library\\datasets\\code-search-net\\code_search_net",
+  "revision": null
+}