docs: sample requests

sample.http

@@ -0,0 +1,22 @@
+GET http://localhost:8090/status
+
+###
+POST http://localhost:8090/health
+Content-Type: application/json
+
+{
+    "name": "service5",
+    "healthy": true
+}
+
+###
+POST http://localhost:8090/health
+Content-Type: application/json
+
+{
+    "name": "service5",
+    "healthy": false
+}
+
+###
+GET http://localhost:8090/health?service=service1