Golang | Log Entry Builder

- https://pajak.home.blog/2019/12/09/logging-5-log-entry-builder/
  - https://play.golang.org/p/BWvmAUIbh62
  - https://play.golang.org/p/XA35g5sC6Am

Meant to showcase refactoring (minor), use of logrus for structured logging data and overall reduction of repetitive code.