Manage internationalization for components internal copies

[epessina]

The library should provide a standardized way to internationalize components' internal copies (e.g., the default placeholder for the searchbar of the Breadcrumb component).

A proposal may be following Antd approach of exposing a locale prop when needed that accepts a key/value object mapping internal i18n ids to translated strings. Morevoer, we could offer a set of pre-compiled translation sheets for the most used languages.