spark: add word counter utility with tests

wizard-work/spark/github_stats.json

@@ -0,0 +1,14 @@
+{
+  "fetched_at": "2026-10-13T10:33:41.858222Z",
+  "artifact": "/root/.hermes/wizard-outputs/spark/github_stats.json",
+  "data": {
+    "name": "cpython",
+    "full_name": "python/cpython",
+    "description": "The Python programming language",
+    "stars": 77628,
+    "forks": 38142,
+    "open_issues": 9701,
+    "html_url": "https://github.com/python/cpython",
+    "updated_at": "2026-10-13T10:27:59Z"
+  }
+}