save software version in the database

The version represents the software version that was used to
import the data.

nominatim/clicmd/setup.py

@@ -8,7 +8,8 @@ import psutil
 
 from ..tools.exec_utils import run_legacy_script
 from ..db.connection import connect
-from ..db import status
+from ..db import status, properties
+from ..version import NOMINATIM_VERSION
 from ..errors import UsageError
 
 # Do not repeat documentation of subcommand classes.
@@ -140,4 +141,7 @@ class SetupAll:
             except Exception as exc: # pylint: disable=broad-except
                 LOG.error('Cannot determine date of database: %s', exc)
 
+            properties.set_property(conn, 'database_version',
+                                    '{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(NOMINATIM_VERSION))
+
         return 0