Introduce Selective CLI Logging Suppression

[luke-guider]

Is your feature request related to a problem? Please describe.
In our current utilization of the Rush Stack for managing our monorepo, we encounter an issue where all stderr outputs are treated as warnings. This behavior unintentionally interferes with specific caching and building processes, potentially hindering overall efficiency.

Upon investigation, it appears that this behavior is influenced by the ora package.

Describe the solution you'd like
I propose the implementation of a CLI flag or environmental variable that offers selective suppression of CLI logging. This feature would allow users to control the output of stderr messages, mitigating the disruption caused by unnecessary warnings.