feat(mail): enhance mail configuration with getmail and dovecot settings

- Added getmail configuration generation using template files.
- Introduced postfix and dovecot configuration checksums for deployment.
- Created new dovecot configuration file and sieve script for email handling.
- Updated main.tf to utilize local variables for configuration management.
- Removed redundant external password hasher from main.tf.

feat(nginx): improve nginx configuration management

- Centralized nginx configuration into a local variable with checksum.
- Created separate config maps for default website configurations.
- Updated deployment to utilize new configuration structure.

feat(sftpgo): add SFTPGo application deployment

- Introduced SFTPGo with Kubernetes resources including namespace, config maps, and secrets.
- Configured SFTPGo with SMTP settings and AWS credentials.
- Implemented health checks and volume mounts for persistent storage.

refactor(seafile): remove Seafile module

- Deleted Seafile module and associated resources as part of cleanup.

terraform/modules/apps/sftpgo/variables.tf

@@ -0,0 +1,68 @@
+
+variable "persistent_folder" {
+  description = "The path to the persistent folder"
+  type        = string
+}
+
+
+variable "backup_folder" {
+  description = "The path to the backup folder"
+  type        = string
+}
+
+variable "admin_username" {
+  description = "The admin username for SFTPGo"
+  type        = string
+  sensitive   = true
+}
+
+variable "admin_password" {
+  description = "The admin password for SFTPGo"
+  type        = string
+  sensitive   = true
+}
+
+variable "tag" {
+  description = "The version of Rustdesk to install"
+  type        = string
+  default     = "latest"
+}
+
+variable "smtp_host" {
+  description = "The SMTP relay host"
+  type        = string
+}
+
+variable "smtp_port" {
+  description = "The SMTP relay port"
+  type        = number
+}
+
+variable "smtp_username" {
+  description = "The SMTP relay username"
+  type        = string
+  sensitive   = true
+}
+
+variable "smtp_password" {
+  description = "The SMTP relay password"
+  type        = string
+  sensitive   = true
+}
+
+variable "from_email" {
+  description = "The email address to use as the sender"
+  type        = string
+}
+
+variable "access_key" {
+  description = "The access key for the S3 compatible storage"
+  type        = string
+  sensitive   = true
+}
+
+variable "secret_key" {
+  description = "The secret key for the S3 compatible storage"
+  type        = string
+  sensitive   = true
+}