[Feature] Replace pointers with ref, out... (For a cleaner code)

[MrScautHD]

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• The issue is specific to Raylib-cs and not raylib
• I checked there is no similar issue already reported
• My code has no errors or misuse of Raylib-cs

Issue description

Hello!
I would suggest to change the methods that use pointers to the features that C# use like: out, ref...

Why i suggest this?

Because sadly pointers in c# are very messy... :/

Example

    public static extern unsafe void QuaternionToAxisAngle(Quaternion q, Vector3* outAxis, float* outAngle);

TO:

    public static extern void QuaternionToAxisAngle(Quaternion q, out Vector3 axis, out float angle);

[MrScautHD]

If you accept this feature request i could do a pr for it :)

[MrScautHD]

I see it is not that easy.