Add "anonymous-only" value to "functionExpression.spaceBeforeParentheses" configuration

[cameronhunter]

Currently functionExpression.spaceBeforeParentheses is a boolean configuration option. It would be great if this could be extended to allow further choice on treating anonymous function expressions differently to named function expressions.

Input Code

const namedFunctionExpression = function namedFunctionExpression() {
  return true;
};

const anonymousFunctionExpression = function() {
  return true;
};

Desired Output

const namedFunctionExpression = function namedFunctionExpression() {
  return true;
};

const anonymousFunctionExpression = function () {
  return true;
};

[jakebailey]

You can already do this via "functionExpression.spaceAfterFunctionKeyword": true: Playground