Add ruleset parameter validation
Add ruleset parameter validation

nanaya/osu-web,ppy/osu-web,notbakaneko/osu-web,nanaya/osu-web,nanaya/osu-web,ppy/osu-web,notbakaneko/osu-web,nanaya/osu-web,ppy/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,nanaya/osu-web,ppy/osu-web,ppy/osu-web