Modelbaker

- The possibility to disable validation on import / export is provided again.
- Do not pass a dataset on import when it's not requested
- Allow to drop XML files on the source selection page
- Don't add unused models from the parsed XTF to the import list

- Fix weird dialog order in MS Windows
- Default CRS is 2056 instead 21781
- Update configuration change in ili2db command sessions when "going back" in wizard
- Wizard GUI improvements

- pass `iface` to Wizard to be able to generate QGIS projects

- Supports XTF model parsing on multiple lines.
- The strange window order (on MS Windows) introduced with 6.6.2 is reverted to the status before.

**Known issues:**
- The settings are not updated in wizard when going back 561
- Wizard dialog don't stays in front on MS Windows 564

- Dataset combobox stays stable on unexpected data sources (like an xtf file).
- Drop of multiple files (including ili-files) in QGIS opens source selection page in wizard.
- File list in source selection page supports drop of multiple files.
- Check the export-configuration instead of the import-configuration on export if there has been a basket handling.
- Wizard dialog stays always in front of QGIS.
- Only check the models in the import model list when same named models are not checked already.
- Only pass models as list in the same session/ili2db command when they are contained in the same ili file.
- Smarter parsing for models in xtf.
- Do not create nm-relation direct relation editor when already a relation_editor to the linktable has been created (because it's not a pure link table but with attributes instead).

- Validation of input (by disabling the button) in the Dataset Manager.
- Use of QGIS Theme icon (so no path problems in Windows) in the Workflow Wizard source selection page.
- Update all the configurations of the Workflow Wizard on the schema import config page. So on data import the same configuration is considered.
- Remove the empty Toolbar when refreshing (updating) Model Baker
- Correct topic parsing (e.g. when there are structures in the model that are not in a topic)
- Basket handling of tables having no topic, like structs that are used in multiple topics. There it should be possible to choose the dataset of it's parent. So all baskets are enabled for them:
- Fix error on trying to use an authentication configuration without super user
- Support Dataset Selector on layers using an authentication configuration
- Avoid error of Dataset Selector on layers using the (not supported by the Dataset Selector) PG service file