need a new Eslint rule for Avoid negative conditionals

[todo]

eslint-plugin-emmanuel/tests/lib/rules/no-restricted-syntax.js

Lines 84 to 89 in 19adb40

	// TODO: need a new Eslint rule for Avoid negative conditionals
	// https://devinduct.com/blogpost/22/javascript-clean-code-best-practices
	// good
	{
	code: "function isUserBlocked(user) {}",
	options

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This issue was generated by todo based on a TODO comment in 19adb40. It's been assigned to @Manu1400 because they committed the code.