[Feature] Add support for Basque (Euskera)

[sebastianvarela]

Is your feature request related to a problem? Please describe.
We need to translate the drop-in component to Basque since new regulations have arised in
the Basque Country that enforces services and apps to be translated to both Spanish and
Basque.

Describe the solution you'd like
We'd like the drop-in component to support Basque

Describe alternatives you've considered
Add the new language to the assets

Additional context
We can provide the translations if you are OK with that. Thanks

Related: Adyen/adyen-android#1622

[atmamont]

Hi @sebastianvarela
Indeed, we do not have in-built support for Basque at the moment. However, you can always provide your own translations.
Please find steps to do so here