Compose a `scalafmt` configuration that applies Nils and Tim's preferred conventions

[msto]

fgbio PRs are expected to adhere to "tim-format," which encompasses Nils and Tim's preferred conventions for formatting Scala code.

e.g. https://github.com/fulcrumgenomics/fgbio/pull/958#discussion_r1466961356

The conventions encompassed by "tim-format" should be documented somewhere in the repository, e.g. in a CONTRIBUTING.md. Additionally, a scalafmt configuration should be composed that automatically applies these formatting conventions. (This configuration should also be adopted in Fulcrum's other Scala repos, including private client repos.)