add locust load testing

locustfile.py

@@ -0,0 +1,18 @@
+import time
+from locust import HttpUser, task, between
+
+class QuickstartUser(HttpUser):
+    wait_time = between(1, 5)
+
+    @task
+    def healthcheck_get(self):
+        self.client.get("/health")
+
+    # @task
+    # def view_cards(self):
+    #     for item_id in range(22):
+    #         self.client.get(f"/cards/?page={item_id}", name="/cards/")
+    #         time.sleep(1)
+
+    # def on_start(self):
+    #     self.client.post("/login", json={"username":"foo", "password":"bar"})