Added vpc config and route variables (#10)

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## Description
This pr adds vpc config and route variables to the module to allow for
more fine grained control of the underlying resources.
Now the lamdba can be added to a vpc and the api gateway can have a
different default route and HTTP method.
<!-- Describe your changes in detail. -->

## Context

<!-- Why is this change required? What problem does it solve? -->

## Type of changes

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the boxes that apply. -->

- [ ] Refactoring (non-breaking change)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would change existing
functionality)
- [ ] Bug fix (non-breaking change which fixes an issue)

## Checklist

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- [ ] I am familiar with the [contributing
guidelines](../docs/CONTRIBUTING.md)
- [ ] I have followed the code style of the project
- [ ] I have added tests to cover my changes
- [ ] I have updated the documentation accordingly
- [ ] This PR is a result of pair or mob programming

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terraform/main.tf

@@ -34,6 +34,15 @@ resource "aws_lambda_function" "get_method_lambda" {
       variables = var.lambda_environment_variables
     }
   }
+
+  dynamic "vpc_config" {
+    for_each = length(keys(var.lambda_vpc_config)) == 0 ? [] : [true]
+    content {
+      subnet_ids         = var.lambda_vpc_config.subnet_ids
+      security_group_ids = var.lambda_vpc_config.security_group_ids
+    }
+  }
+
 }
 
 resource "aws_cloudwatch_log_group" "get_method_lambda_log_group" {
@@ -59,7 +68,7 @@ resource "aws_apigatewayv2_integration" "get_method_lambda_integration" {
 
 resource "aws_apigatewayv2_route" "get_method_route" {
   api_id    = aws_apigatewayv2_api.get_method_api.id
-  route_key = "GET /"
+  route_key = "${var.api_route_method} ${var.api_route_path}"
   target    = "integrations/${aws_apigatewayv2_integration.get_method_lambda_integration.id}"
 }
 

terraform/variables.tf

@@ -68,3 +68,28 @@ variable "log_retention_days" {
   description = "The number of days to retain log events in the CloudWatch Logs Log Group."
   default     = 14
 }
+
+variable "lambda_vpc_config" {
+  description = "VPC configuration for the Lambda function."
+  type = object({
+    security_group_ids = list(string)
+    subnet_ids         = list(string)
+  })
+  default = {
+    security_group_ids = []
+    subnet_ids         = []
+  }
+}
+
+variable "api_route_method" {
+  description = "The route method for the API Gateway."
+  type        = string
+  default     = "GET"
+}
+
+variable "api_route_path" {
+  description = "The path for the API Gateway."
+  type        = string
+  default     = "/"
+
+}