Creating secrets manager resource to store gha app secret for self ho…

…sted runners

terraform/environments/prod/secrets.tf

@@ -0,0 +1,17 @@
+resource "aws_secretsmanager_secret" "gha_app_self_hosted_runner" {
+  name = "gha-app-self-hosted-runner"
+}
+
+variable "gha_app_self_hosted_runner_secret" {
+  type = object({
+    github_app_id = ""
+    github_app_installation_id = ""
+    github_app_private_key = ""
+  })
+  type = map(string)
+}
+
+resource "aws_secretsmanager_secret_version" "gha_app_self_hosted_runner" {
+  secret_id     = aws_secretsmanager_secret.gha_app_self_hosted_runner.id
+  secret_string = jsonencode(var.gha_app_self_hosted_runner_secret)
+}