polygon hit detection as standalone function

[CrosRoad95]

https://github.com/multitheftauto/mtasa-blue/blob/b2227c359092ce530cdf9727466b88bec8282cd0/Server/mods/deathmatch/logic/CColPolygon.cpp#L25

this should be as standalone function,

isPointInPolygon(x,y,x1,y1,x2,y2,x3,y3,...) -- return true or false