add: contactController,tests & refactored tests

internal/controllers/membershipController.go

@@ -40,15 +40,17 @@ func (mc *MembershipController) RegisterSubscription(c *gin.Context) {
 		c.JSON(http.StatusExpectationFailed, "API Key is missing")
 		return
 	}
-	logger.Info.Printf("registering subscription: %+v", regData)
 
 	// Register Subscription
 	id, err := mc.Service.RegisterSubscription(&regData.Model)
 	if err != nil {
 		logger.Error.Printf("Couldn't register Membershipmodel: %v", err)
-		c.JSON(http.StatusInternalServerError, "Couldn't register Membershipmodel")
+		c.JSON(int(id), "Couldn't register Membershipmodel")
 		return
 	}
-	regData.Model.ID = id
-
+	logger.Info.Printf("registering subscription: %+v", regData)
+	c.JSON(http.StatusCreated, gin.H{
+		"status": "success",
+		"id":     id,
+	})
 }