refactor(logs): move cloudwatch resources in dedicated file

Move all Cloudwatch-related resources into a dedicated iam.tf
file to improve code organization and maintainability.
No functional changes, purely organizational improvement.

Author: diodonfrost

cloudwatch.tf

@@ -0,0 +1,25 @@
+resource "aws_cloudwatch_event_rule" "this" {
+  name                = "trigger-lambda-scheduler-${var.name}"
+  description         = "Trigger lambda scheduler"
+  schedule_expression = var.cloudwatch_schedule_expression
+  tags                = var.tags
+}
+
+resource "aws_cloudwatch_event_target" "this" {
+  arn  = aws_lambda_function.this.arn
+  rule = aws_cloudwatch_event_rule.this.name
+}
+
+resource "aws_lambda_permission" "this" {
+  statement_id  = "AllowExecutionFromCloudWatch"
+  action        = "lambda:InvokeFunction"
+  principal     = "events.amazonaws.com"
+  function_name = aws_lambda_function.this.function_name
+  source_arn    = aws_cloudwatch_event_rule.this.arn
+}
+
+resource "aws_cloudwatch_log_group" "this" {
+  name              = "/aws/lambda/${var.name}"
+  retention_in_days = 14
+  tags              = var.tags
+}

main.tf

@@ -37,40 +37,3 @@ resource "aws_lambda_function" "this" {
 
   tags = var.tags
 }
-
-################################################
-#
-#            CLOUDWATCH EVENT
-#
-################################################
-
-resource "aws_cloudwatch_event_rule" "this" {
-  name                = "trigger-lambda-scheduler-${var.name}"
-  description         = "Trigger lambda scheduler"
-  schedule_expression = var.cloudwatch_schedule_expression
-  tags                = var.tags
-}
-
-resource "aws_cloudwatch_event_target" "this" {
-  arn  = aws_lambda_function.this.arn
-  rule = aws_cloudwatch_event_rule.this.name
-}
-
-resource "aws_lambda_permission" "this" {
-  statement_id  = "AllowExecutionFromCloudWatch"
-  action        = "lambda:InvokeFunction"
-  principal     = "events.amazonaws.com"
-  function_name = aws_lambda_function.this.function_name
-  source_arn    = aws_cloudwatch_event_rule.this.arn
-}
-
-################################################
-#
-#            CLOUDWATCH LOG
-#
-################################################
-resource "aws_cloudwatch_log_group" "this" {
-  name              = "/aws/lambda/${var.name}"
-  retention_in_days = 14
-  tags              = var.tags
-}