Add Gitea and Mail modules with configuration and resources

- Created Gitea module with outputs, provider, and variables for deployment.
- Implemented Mail module including configuration for Dovecot and Postfix, along with necessary resources such as secrets, config maps, and deployments.
- Added Python script for bcrypt password hashing and integrated it into the Mail module.
- Defined persistent volumes and claims for Seafile module, along with Nginx configuration for serving content.
- Established necessary variables for all modules to ensure flexibility and configurability.

terraform/modules/seafile/config.tf

@@ -0,0 +1,7 @@
+locals {
+  persistent_folder = var.persistent_folder
+  websites_path     = "${local.persistent_folder}/web"
+  primary_domain    = var.primary_domain
+  websites          = var.websites
+}
+