doc(Localizer): add italian localization (dotnetcore#6810)

* Add Italian localization file to project

Added `localization/it.json` to the project configuration file `BootstrapBlazor.slnx` to introduce support for the Italian language.

* Add Italian translations for BootstrapBlazor components

Added localized strings for labels, placeholders, tooltips, error messages, and other UI text in Italian across various  `BootstrapBlazor` components. This includes support for  features like form validation, table operations, date and  time pickers, modals, dropdowns, and more. These changes  enhance the user experience for Italian-speaking users by providing a fully localized interface.

* Update localization/it.json

Co-authored-by: Copilot <[email protected]>
Signed-off-by: Angelo Pirola <[email protected]>

* Update localization/it.json

Co-authored-by: Copilot <[email protected]>
Signed-off-by: Angelo Pirola <[email protected]>

* Update localization/it.json

Co-authored-by: Copilot <[email protected]>
Signed-off-by: Angelo Pirola <[email protected]>

* chore: bump version 9.11.1-beta02

---------

Signed-off-by: Angelo Pirola <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Argo Zhang <[email protected]>

Author: 3 people

BootstrapBlazor.slnx

@@ -20,6 +20,7 @@
   <Folder Name="/localization/">
     <File Path="localization/de.json" />
     <File Path="localization/es.json" />
+    <File Path="localization/it.json" />
     <File Path="localization/pt.json" />
     <File Path="localization/ru-RU.json" />
     <File Path="localization/th-TH.json" />