Add codebases for Python samples (#1087)

Author: jhuleatt

Python/alerts-to-discord/README.md

@@ -0,0 +1,5 @@
+{
+  "functions": {
+    "codebase": "alerts-to-discord"
+  }
+}

Python/alerts-to-discord/firebase.json

@@ -0,0 +1,5 @@
+{
+  "functions": {
+    "codebase": "delete-unused-accounts-cron"
+  }
+}

Python/alerts-to-discord/main.py renamed to Python/alerts-to-discord/functions/main.py

@@ -0,0 +1,5 @@
+{
+  "functions": {
+    "codebase": "http-flask"
+  }
+}