anime: refactor Anime::SeriesSeason to Season class ToLocalString has also been altered to take in both season and year because lots of locales actually treat formatting seasons differently! most notably is Russian which adds a suffix at the end to notate seasons(??)

#ifndef MINORI_SYS_GLIB_DARK_THEME_H_
#define MINORI_SYS_GLIB_DARK_THEME_H_

namespace glib {

bool IsInDarkTheme();

}

#endif // MINORI_SYS_GLIB_DARK_THEME_H_