Added the ability to disable the select component placeholder option

[Okipa]

• Added the ability to disable the select component placeholder option with the new ->disablePlaceholder() method
• Deprecations :
  • The select component ->disabled() method usages should be replaced by ->disableOptions()
  • The select component ->selected() method usages should be replaced by ->selectOptions()
  • These deprecated methods will be removed in the next major version
  • These renaming are improving understanding about what these methods are actually doing