feat(gitea): refactor configuration to use structured app_config and add TLS support

terraform/modules/db/mariadb/variables.tf

@@ -49,3 +49,15 @@ variable "backup_folder" {
   description = "Backup source location"
   type        = string
 }
+
+variable "tls_enabled" {
+  description = "Enable SSL for MariaDB"
+  default     = false
+  type        = bool
+}
+
+variable "issuer" {
+  description = "Issuer for SSL certificate"
+  default     = "internal-ca"
+  type        = string
+}