[ci skip] OS class documentations, adds platform compatibility notes.
[ci skip] OS class documentations, adds platform compatibility notes.

Zylann/godot,vnen/godot,MarianoGnu/godot,pkowal1982/godot,Shockblast/godot,vnen/godot,Shockblast/godot,josempans/godot,vnen/godot,Faless/godot,guilhermefelipecgs/godot,ex/godot,Shockblast/godot,ex/godot,Valentactive/godot,Valentactive/godot,ZuBsPaCe/godot,josempans/godot,vnen/godot,sanikoyes/godot,vnen/godot,Shockblast/godot,josempans/godot,vkbsb/godot,guilhermefelipecgs/godot,pkowal1982/godot,vnen/godot,Faless/godot,ZuBsPaCe/godot,MarianoGnu/godot,honix/godot,godotengine/godot,firefly2442/godot,sanikoyes/godot,Paulloz/godot,Valentactive/godot,sanikoyes/godot,Zylann/godot,Paulloz/godot,vnen/godot,MarianoGnu/godot,akien-mga/godot,vkbsb/godot,akien-mga/godot,Valentactive/godot,ex/godot,Paulloz/godot,guilhermefelipecgs/godot,DmitriySalnikov/godot,honix/godot,vkbsb/godot,guilhermefelipecgs/godot,firefly2442/godot,akien-mga/godot,Zylann/godot,guilhermefelipecgs/godot,ex/godot,Shockblast/godot,godotengine/godot,MarianoGnu/godot,vkbsb/godot,DmitriySalnikov/godot,Paulloz/godot,Faless/godot,BastiaanOlij/godot,Valentactive/godot,akien-mga/godot,BastiaanOlij/godot,pkowal1982/godot,BastiaanOlij/godot,DmitriySalnikov/godot,honix/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,Paulloz/godot,Valentactive/godot,BastiaanOlij/godot,ZuBsPaCe/godot,Faless/godot,guilhermefelipecgs/godot,pkowal1982/godot,firefly2442/godot,DmitriySalnikov/godot,honix/godot,Shockblast/godot,ex/godot,ZuBsPaCe/godot,BastiaanOlij/godot,MarianoGnu/godot,josempans/godot,Faless/godot,akien-mga/godot,ZuBsPaCe/godot,godotengine/godot,pkowal1982/godot,sanikoyes/godot,godotengine/godot,sanikoyes/godot,BastiaanOlij/godot,Paulloz/godot,vkbsb/godot,vnen/godot,Shockblast/godot,firefly2442/godot,firefly2442/godot,akien-mga/godot,firefly2442/godot,BastiaanOlij/godot,DmitriySalnikov/godot,Valentactive/godot,vkbsb/godot,josempans/godot,godotengine/godot,BastiaanOlij/godot,Faless/godot,ZuBsPaCe/godot,Faless/godot,Valentactive/godot,godotengine/godot,honix/godot,ex/godot,josempans/godot,pkowal1982/godot,firefly2442/godot,ex/godot,pkowal1982/godot,Zylann/godot,Faless/godot,akien-mga/godot,Paulloz/godot,godotengine/godot,vkbsb/godot,honix/godot,MarianoGnu/godot,sanikoyes/godot,pkowal1982/godot,MarianoGnu/godot,DmitriySalnikov/godot,Zylann/godot,josempans/godot,Shockblast/godot,guilhermefelipecgs/godot,MarianoGnu/godot,josempans/godot,Zylann/godot,Zylann/godot,Zylann/godot,guilhermefelipecgs/godot,ex/godot,firefly2442/godot,vkbsb/godot,akien-mga/godot,sanikoyes/godot,godotengine/godot,DmitriySalnikov/godot,sanikoyes/godot