feat: add deploy keys variable and implement GitHub Deploy Keys resource

github_deploy_keys.tf

@@ -0,0 +1,14 @@
+// This file implements GitHub Deploy Keys functionality for the repository
+
+resource "github_repository_deploy_key" "deploy_key" {
+  for_each   = { for k, v in var.deploy_keys : k => v }
+
+  title      = each.value.title
+  repository = local.github_repo.name
+  key        = each.value.key
+  read_only  = each.value.read_only
+
+  depends_on = [
+    github_repository.repo
+  ]
+}

variables.tf

@@ -408,3 +408,13 @@ variable "github_pro_enabled" {
   default     = false
   description = "Is this a Github Pro Account? If not, then it's limited in feature set"
 }
+
+variable "deploy_keys" {
+  description = "List of SSH deploy keys to add to the repository"
+  type = list(object({
+    title     = string
+    key       = string
+    read_only = optional(bool, true)
+  }))
+  default = []
+}