feat: add visibility_timeout_seconds var (#6)

## Description
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## Motivation and Context
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## Breaking Changes
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README.md

@@ -62,6 +62,7 @@ Terraform module which creates a sqs queue
 | <a name="input_subscription_aws_account_id"></a> [subscription\_aws\_account\_id](#input\_subscription\_aws\_account\_id) | The AWS account ID for the subscription. | `string` | `null` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br>Neither the tag keys nor the tag values will be modified by this module. | `map(string)` | `{}` | no |
 | <a name="input_tenant"></a> [tenant](#input\_tenant) | ID element \_(Rarely used, not included by default)\_. A customer identifier, indicating who this instance of a resource is for | `string` | `null` | no |
+| <a name="input_visibility_timeout_seconds"></a> [visibility\_timeout\_seconds](#input\_visibility\_timeout\_seconds) | The visibility timeout for the queue. An integer from 0 to 43200 (12 hours) | `number` | `null` | no |
 
 ## Outputs
 

main.tf

@@ -42,6 +42,9 @@ module "sqs" {
   }
 
   tags = module.this.tags
+
+  visibility_timeout_seconds = var.visibility_timeout_seconds
+
 }
 
 resource "aws_sns_topic_subscription" "default" {

variables.tf

@@ -49,3 +49,9 @@ variable "subscription_aws_account_id" {
   description = "The AWS account ID for the subscription."
   default     = null
 }
+
+variable "visibility_timeout_seconds" {
+  description = "The visibility timeout for the queue. An integer from 0 to 43200 (12 hours)"
+  type        = number
+  default     = null
+}