Create option is not working since the new db widget does not allow to create a new database

[Guts]

Environment

• Plugin version: 1.4.0-beta4
• QGIS version: 3.16
• Operating System: ND

Expected behavior

If:

• no database is selected within the combobx
• AND the create option is selected

then: create a new database prompting the user to name it and select the folder

[sgrellet]

issue confirmed under QGIS 3.16.16

2022-02-03T14:47:38 WARNING Traceback (most recent call last):
File "C:\Users/grellets/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\gml_application_schema_toolbox\gui\load_wizard.py", line 202, in validatePage
self._panel.do_load()
File "C:\Users/grellets/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\gml_application_schema_toolbox\gui\import_gmlas_panel.py", line 404, in do_load
import_in_qgis(
File "C:\Users/grellets/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\gml_application_schema_toolbox\core\load_gmlas_in_qgis.py", line 144, in import_in_qgis
PlgLogger.log(message=f"DEBUG List of layers : {result}", log_level=4)
UnboundLocalError: local variable 'result' referenced before assignment