feat: export databases as a ZIP bundle (#11229)

* Export databases as Zip file

* Fix tests

* Address comments

* Implement mulexport for database

* Fix lint

* Fix lint

superset/utils/dict_import_export.py

@@ -15,6 +15,8 @@
 # specific language governing permissions and limitations
 # under the License.
 import logging
+import re
+import unicodedata
 from typing import Any, Dict, List, Optional
 
 from sqlalchemy.orm import Session
@@ -22,6 +24,7 @@ from sqlalchemy.orm import Session
 from superset.connectors.druid.models import DruidCluster
 from superset.models.core import Database
 
+IMPORT_EXPORT_VERSION = "1.0.0"
 DATABASES_KEY = "databases"
 DRUID_CLUSTERS_KEY = "druid_clusters"
 logger = logging.getLogger(__name__)
@@ -95,3 +98,18 @@ def import_from_dict(
         session.commit()
     else:
         logger.info("Supplied object is not a dictionary.")
+
+
+def strip_accents(text: str) -> str:
+    text = unicodedata.normalize("NFD", text).encode("ascii", "ignore").decode("utf-8")
+
+    return str(text)
+
+
+def sanitize(name: str) -> str:
+    """Sanitize a post title into a directory name."""
+    name = name.lower().replace(" ", "_")
+    name = re.sub(r"[^\w]", "", name)
+    name = strip_accents(name)
+
+    return name