[BUG] FVM Preamble in fvm flutter

[nicholasspencer]

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Describe the bug
fvm flutter injects logging into the output. This can be problematic when you're using fvm flutter pub run and expecting a certain output from the tool that was ran.

To Reproduce
Steps to reproduce the behavior:

1. Go to terminal..
2. Run fvm flutter pub run <some package executable>...
3. See fvm's preamble

Expected behavior
The output from the ran executable.

Logs
N/A

Additional context
We noticed this in our CI pipeline. We use fvm to pin the version that CI uses which is great, thank you for that. However we also use a few of our own tooling that is executed with fvm flutter pub run and we're expecting that the output is the tool's output.

In my opinion, that preamble should only print if the --verbose is passed in.

[leoafarias]

@nicholasspencer makes sense

[leoafarias]

Solved on version 2.0.4