Add New Properties to Select and DateDropdown Components

[emncnozge]

💡 What is the current behavior?

• The DateDropdown component does not support specifying the starting day of the week (WeekStartIndex) or localization settings (Locale), which were introduced in the latest IX version.
• The Select component lacks several properties, and in the latest version of IX, it is a form-ready component.
• Select and SelectItem components lack tests.

🆕 What is the new behavior?

• Added new properties to DateDropdown:

  • WeekStartIndex
  • Locale

• Added new properties to Select component:

  • Name
  • Required
  • ShowTextAsTooltip
  • InfoText
  • InvalidText
  • Label
  • ValidText
  • WarningText
  • HelperText
  • DropdownWidth
  • DropdownMaxWidth

• Added ixBlur event support to Select component

• Added tests for Select and SelectItem

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• 🦮 Accessibility (a11y) features were implemented
• 🗺️ Internationalization (i18n) - no hard coded strings
• 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• 📄 Documentation was reviewed/updated
• 🧪 Unit tests were added/updated and pass (dotnet test)
• 🏗️ Successful compilation (dotnet build, changes pushed)

👨‍💻 Help & support