add scaffolding tf code

backend.tf

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+terraform {
+  backend "s3" {
+    bucket  = "kunduso-terraform-remote-bucket"
+    encrypt = true
+    key     = "tf/add-aws-lambda-terraform/terraform.tfstate"
+    region  = "us-east-2"
+  }
+}

provider.tf

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+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "5.53.0"
+    }
+  }
+}
+
+provider "aws" {
+  region     = var.region
+  access_key = var.access_key
+  secret_key = var.secret_key
+  default_tags {
+    tags = {
+      Source = "https://github.com/kunduso/add-aws-lambda-terraform"
+    }
+  }
+}

variables.tf

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+#Define AWS Region
+variable "region" {
+  description = "Infrastructure region"
+  type        = string
+  default     = "us-east-2"
+}
+#Define IAM User Access Key
+variable "access_key" {
+  description = "The access_key that belongs to the IAM user"
+  type        = string
+  sensitive   = true
+  default     = ""
+}
+#Define IAM User Secret Key
+variable "secret_key" {
+  description = "The secret_key that belongs to the IAM user"
+  type        = string
+  sensitive   = true
+  default     = ""
+}