Parsing seems to require finalNewline regardless of finalNewline option

[justinaray]

The parsing of the json file seems to fail if there's a trailing newline and doesn't seem to consult the finalNewline option. I recognize the finalNewline is likely an output option, but would be great if we could have an option to control if it's allowed in the source translation files.

it's pretty common on *nix systems, editor configs, and IDE formatters to insert a trailing newline.

I actually had to remove --check from my command to format so I could find the issue.

npx sync-i18n --files '**/src/i18n/*.json' --primary "en-us" --space 4 --finalNewline true --check