Support check flag

[ppiyush13]

@felixmosh Thanks for this library which supports namespace as well. I read the document but still want to confirm is there check flag available with i18next-locales-sync ? If no, then is it possible to add this flag, it will be really useful to check locales files in CI environment.

[felixmosh]

@ppiyush13 thank you for your interest in this lib.

Currently there is no "dry-run" mode, the idea behind this lib is to sync locale keys without human interaction.
If you use GIT in your CI env, you can run this lib, and then check for changed files with

git status path/to/your/locales/folder -s

This will generate a list of locales files that were changed