Implements {{Uses TemplateStyles}}.

A couple test cases

One style page

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{{Uses TemplateStyles|Template:Arrowlist/styles.css}}

Multiple style pages

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{{Uses TemplateStyles|Template:Arrowlist/styles.css|Template:Routemap/styles.css}}

Sandbox version of style page exists

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{{Uses TemplateStyles|Template:Uses TemplateStyles/example.css}}

No style pages specified

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{{Uses TemplateStyles}}

Unicode

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{{Uses TemplateStyles|Template:§&"woof"\//styles.css}}