Language translation

[Big-Tree]

Checklist

• I have filled out the template to the best of my ability.
• This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

Add support for your language!

Describe the solution you'd like

To add a new language:

• Create a copy of the english file:
  custom_components/optispark/translations/en.json
• Change the language code from en (english) to your language code.
• Translate to your language.

Documentation can be found here:
https://developers.home-assistant.io/docs/internationalization/custom_integration

Describe alternatives you've considered

Additional context