#333 Internationalization and Localization Support

[kennethbruskiewicz]

• Created a "Template" class for schema and documentation management which responds to locale changes
• Added support for i18n to be managed through a translation.json file informed by @ddooley
• Added a "Language" UI component

Next steps:

• Refactor existing schema injection to use the Template object
• Test the coupling between the UI component and schema changes
• Contact researchers requiring localization and get instructed on their use-cases for controls
• Come up with example data for implementing the internationalization behaviour
• Show LinkML community the work and address pain-points
  • schemas don't know their language so it's a property of the way templates are packaged