feat: Implement price list management and import functionality

- Added ListinoRelationManager for managing price lists associated with models.
- Introduced ImportaListiniAction for importing price lists from Excel files.
- Created ListinoPrezzo model to represent price entries in the database.
- Developed ListinoExcelParser for parsing Excel files containing price lists.
- Implemented ListinoImporter to handle the import logic and associations.
- Added migration for creating listino_prezzi table and converting measures to mm.
- Updated frontend logic to handle new price list features and validations.
- Enhanced tests for price list import and conversion functionalities.

backoffice/app/Support/ConfigurazioneFormatter.php

@@ -13,8 +13,8 @@ class ConfigurazioneFormatter
 {
     /** Etichette italiane per le chiavi note. */
     private const LABELS = [
-        'width' => 'Larghezza (cm)',
-        'height' => 'Altezza (cm)',
+        'width' => 'Larghezza (mm)',
+        'height' => 'Altezza (mm)',
         'tipo_finitura' => 'Tipo finitura',
         'finitura_interna' => 'Finitura interna',
         'finitura_esterna' => 'Finitura esterna',