add flag option to turn off printDimension logging output

[AurelianTimu]

Hi,

Thank you for your work on this project.

The printDimension logging output is cluttering the console in development mode, even though the output is turned off in prod mode.
What if a boolean flag could be passed as input to turn the output of printDimension on/off?

ng-terminal/projects/ng-terminal/src/lib/ng-terminal.component.ts

Line 532 in 5b3bc0d

private printDimension(title: string) {

I could submit a PR, just let me know if this is something that you would like to be added.