🩹 Fix path output when stdout is not terminal

[shantanuraj]

:star2: What does this PR do?

• Adds a check using std::io::stdout().is_terminal() to decide if we should log the simplified or the full path.

:bug: Recommendations for testing

$ toggl config --path # logs the simplified path
$ cat "$(toggl config --path)" # correctly logs the config toml

Commands affected

$ toggl config init
$ toggl config --delete
$ toggl config --path

:memo: Links to relevant issues/docs

Closes #63

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