feat: marketplace api implementation [CS-35325]

Feature in marketplace: feat: marketplace api implementation [CS-35325]

Author: ishaileshmishra

src/test/resources/app/app-create.json

@@ -20,6 +20,16 @@
             }
           ]
         },
+        {
+          "type": "cs.cm.stack.config.fake",
+          "meta": [
+            {
+              "signed": true,
+              "path": "/config_i",
+              "name": "Fake Configuration_2"
+            }
+          ]
+        },
         {
           "type": "cs.cm.stack.custom_field",
           "meta": [