feat: disable progress bars when running in CI (#126)

## Description

This disables progress bars when `CI` is set to `true`

## Related Issue

Fixes #124 

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [X] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/maru-runner/blob/main/CONTRIBUTING.md)
followed

src/cmd/root.go

@@ -91,6 +91,10 @@ func cliSetup() {
 			message.SLog.Warn(fmt.Sprintf("Unable to setup log file: %s", err.Error()))
 		}
 	}
+
+	if os.Getenv("CI") == "true" {
+		message.NoProgress = true
+	}
 }
 
 // exitOnInterrupt catches an interrupt and exits with fatal error