Feature Request: no-banned-words rule

[radiovisual]

Similar to the no-offensive-language list mentioned in #8, this rule could operate solely on a list of user-supplied words that they want to ensure are banned from any of the translation files (including the source file).

It could be configured to accept a text file, or json file (or either or) like this:

{
	"rules": {
		"no-banned-words": {
			"severity": "error",
			"bannedWordsDirectory": "path/to/banned/words/dir"
		}
	}
}

and the banned words directory could look like this where each file is there to represent the banned words for each locale:

banned-words/
├── de.txt
├── en.txt
└── fr.txt

The files could have one banned word on each line in the respective file

foo
bar