Directly call `$this->getOutput()->write()` to avoid an extra newline in the `tail` command

[squatto]

Currently, the tail command calls $this->line($line), which in turn calls $this->getOutput()->writeln($line). Since the log file is being read with fgets(), $line includes the ending newline character. Passing this to writeln() appends another newline character, resulting in an empty/blank line between each output line:

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This change simply directly calls $this->getOutput()->write($line) to avoid appending an extra newline character:

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This resolves #12

[squatto]

@PhiloNL there's one more simple change left if/when you have a quick sec to merge it as well 🙏🏻 🙏🏻

Thanks!!