Extend IBM Plex to Bengali Typeface Family.

[mistu01]

Thank you so much for everything.

As you guys already did Devanagari I want to suggest to extend the family and add Bengali typefaces. Bengali is a native language for more than 300 million people all around the world, also more than 37 million people use it as their 2nd language. Sadly there are not much Good free/Open Source fonts available for this Beautiful language. As a native speaker, I would love to see IBM Plex has a Bengali family.

Kind Regards. ^_^

[tay1orjones]

cc @BoldMonday

[BoldMonday]

Added as issue #478