imageData.GetPixels() and imageData.SetPixels() with Love2D.Color[,] and Love2D.Color[][]

[Shadowblitz16]

I think these should also be added for easy to use converting. note I think they should also use memory copying instead of looping to be faster.

these functions allow people to quickly write and read pixelData;

[endlesstravel]

same as #98

[Shadowblitz16]

this is more to do with ImageData.SetPixels and ImageData.GetPixels sorry

[endlesstravel]

ok, i will add them.