added base class for api handling

test/test.http

@@ -0,0 +1,15 @@
+# For a quick start check out our HTTP Requests collection (Tools|HTTP Client|Open HTTP Requests Collection).
+#
+# Following HTTP Request Live Templates are available:
+# * 'gtrp' and 'gtr' create a GET request with or without query parameters;
+# * 'ptr' and 'ptrp' create a POST request with a simple or parameter-like body;
+# * 'mptr' and 'fptr' create a POST request to submit a form with a text or file field (multipart/form-data);
+
+### Send POST request with json body
+POST http://localhost:5000/api/test
+Content-Type: application/json
+
+{
+  "id": 999,
+  "value": "content"
+}