First application files and tests

app/__init__.py

@@ -0,0 +1,10 @@
+from flask import Flask
+
+def create_app():
+    app = Flask(__name__)
+
+    @app.get("/health")
+    def health():
+        return "", 200
+
+    return app

requirements.txt

@@ -0,0 +1 @@
+Flask==3.1.3

tests/test_health.py

@@ -0,0 +1,11 @@
+from app import create_app
+
+def test_health_returns_http_200():
+    app = create_app()
+    client = app.test_client()
+
+    response = client.get("/health")
+
+    assert response.status_code == 200
+
+