feat: Add Terraform configuration for AWS (#2)

* feat: Add Terraform configuration for AWS

* feat: Update data models to use string identifiers and add DynamoDB table configurations

* feat: Update Terraform S3 backend configuration

tasker-server/terraform/main.tf

@@ -0,0 +1,9 @@
+terraform {
+  backend "s3" {
+    bucket = "tasker-tf-infra"
+    key    = "terraform.tfstate"
+    region = "eu-north-1"
+  }
+}
+
+provider "aws" {}