suppress printing runIndicator when running in batch context

[ryenus]

While running mbt in an interactive context, having runIndicator enabled is quite nice, by indicating the build is work in progress rather than stuck.

• cloud-mta-build-tool/internal/artifacts/project.go

  Line 146 in 22052f6

  err = exec.ExecuteWithTimeout(cmds, builder.Timeout, true)

• cloud-mta-build-tool/cmd/exec.go

  Line 25 in 22052f6

  err := exec.ExecuteCommandsWithTimeout(executeCmdCommands, executeCmdTimeout, executeCmdDir, true)

However, when running in a batch context, such as CI pipelines, having the dots mixed in the build logs is not really helpful.

It would be nice for mbt to add batch-mode support, which can suppress the runIndicator dots when run in batch mode.

[ryenus]

It would be nice to have a command line option like -B, with --batch-mode being the long option, to allow the user to disable the runIndicator dots when set.

And proposing -B here, because -b is already taken (for sbom). In the meantime Apache Maven also use -B and --batch-mode so that mbt and Apache Maven can be aligned on this.