The settings parameter is a string that contains a comma-separated list of settings
for configuring the svgo plugin. These settings will be split into an array and trimmed before
being returned as an object with a plugins property.
A function is being returned that takes in an argument settings and returns an object of
type SvgoConfig. The function splits the settings string by commas and trims each option, then
maps the resulting array to an array of SvgoPluginConfig objects. Finally, the function returns an
object with a plugins property set to the conf array.
The function takes in a string of settings, splits it by commas, and returns an object with the settings as an array under the "plugins" key.