feat(scripts): add scripts for backup/restore + upload to s3 storage

.env.example

@@ -1,2 +1,13 @@
 NEXT_HOST=east-guilan-ce.ir
 LETSENCRYPT_EMAIL=admin@east-guilan-ce.ir
+
+# Backups
+S3_BACKUP_BUCKET=replace-with-bucket
+S3_BACKUP_PREFIX=backup/guilan-ace
+S3_BACKUP_REGION=us-east-1
+S3_BACKUP_ENDPOINT_URL=https://replace-with-s3-endpoint.example.com
+S3_BACKUP_ACCESS_KEY_ID=replace-with-access-key
+S3_BACKUP_SECRET_ACCESS_KEY=replace-with-secret-key
+BACKUP_ENCRYPTION_PASSPHRASE=replace-with-long-random-passphrase
+BACKUP_LOCAL_KEEP_LATEST=3
+BACKUP_REMOTE_KEEP_LATEST=10