make resource standalone, remove for loop

modules/gateway_response/main.tf

@@ -1,10 +1,8 @@
-resource "aws_api_gateway_gateway_response" "wrapper" {
-  for_each = var.gateway_responses
-
+resource "aws_api_gateway_gateway_response" "this" {
   rest_api_id   = var.rest_api_id
-  response_type = each.key
-  status_code   = each.value.status_code
+  response_type = var.response_type
+  status_code   = var.status_code
 
-  response_templates  = each.value.response_templates
-  response_parameters = each.value.response_parameters
+  response_templates  = var.gateway_responses
+  response_parameters = var.response_parameters
 }

modules/gateway_response/variables.tf

@@ -4,8 +4,26 @@ variable "rest_api_id" {
   default     = ""
 }
 
+variable "response_type" {
+  description = "The response type of the gateway response"
+  type        = string
+  default     = ""
+}
+
+variable "status_code" {
+  description = "The status code of the gateway response"
+  type        = string
+  default     = ""
+}
+
 variable "gateway_responses" {
   description = "map of gateway responses"
   type        = map(any)
   default     = {}
 }
+
+variable "response_parameters" {
+  description = "map of response parameters"
+  type        = map(any)
+  default     = {}
+}