Add wartremover and scalacOptions to ic-anthill-scala

[michalrus]

Josh, since https://github.com/FoxComm/highlander/compare/feature/ic-anthill-scala is a greenfield project, please consider adding Wartremover and hardcore scalacOptions to it, to help us keep quality high from the beginning.

You can copy @kjanosz in his search service:

• https://github.com/FoxComm/highlander/blob/b26c25deb05f5004ff221146d47f01925b091dd5/agni/project/wartremover.sbt
• https://github.com/FoxComm/highlander/blob/b26c25deb05f5004ff221146d47f01925b091dd5/agni/project/Settings.scala#L16-L32

Thank you! :hugs: