add vercel files

Author: renansantosmendes

.vercelignore

@@ -0,0 +1,4 @@
+venv/
+tests/
+.github/
+.env

vercel.json

@@ -0,0 +1,9 @@
+{
+  "version": 2,
+  "builds": [
+    { "src": "app/main.py", "use": "@vercel/python" }
+  ],
+  "routes": [
+    { "src": "/(.*)", "dest": "app/main.py" }
+  ]
+}