Integrate the `words` lint ruleset to ensure greater source code safety and to comply with best practices

[vxern]

I really appreciate the cleanliness of this package's source code, however, I have also noticed that it isn't using a lint ruleset the likes of lints to ensure consistency in implementation. To solve this, I propose to integrate the words lint ruleset that I have created for ensuring greater source code safety in my own projects. It is available at https://pub.dev/packages/words.

[LostInDarkMath]

I added the flutter_lints library in this PR: https://github.com/timtraversy/new_version/pull/83