Add some function from CBA_A3 and a method to manage array of array

[Vdauphin]

I start to miss the CBA_A3 framework for some generic function managing geometric operation and some possibility of A3 like managing array of array.

CBA_fnc_randPos is still usefull in AR: https://github.com/CBATeam/CBA_A3/blob/master/addons/common/fnc_randPos.sqf

float angle = 2.0 * Math.PI * Math.RandomFloat(0, 1);
float radius = Math.RandomFloat(0, cachingRadius);

vector pos = position;
pos[0] = pos[0] + radius * Math.Cos(angle);
pos[2] = pos[2] + radius * Math.Sin(angle);
pos = VDA_City.SnapToSurface(pos);

Array of array was a very usefull feature in A3.

/*
	ref array<int> m_ints = {1,5,8,6};
	ref array<ref VDA_Array> m_listOfList;
	VDA_Array.Insert(m_ints, m_listOfList);
	Print(m_listOfList[0].GetRessourceName());
*/

class VDA_Array {
	ref array<ResourceName> m_resourceName;
	
	void Set(array<ResourceName> element) 
	{
		m_resourceName = element;
	}

	array<ResourceName> GetRessourceName() 
	{
		return this.m_resourceName;
	}
	
	static void Insert(array<ResourceName> element, array<ref VDA_Array> arrayOfElement) 
	{
		VDA_Array elementName = new VDA_Array();
		elementName.Set(element);
		arrayOfElement.Insert(elementName);
	}

	ref array<int> m_int;
	
	void Set(array<int> element) 
	{
		m_int = element;
	}

	array<int> GetInt() 
	{
		return this.m_int;
	}
	
	static void Insert(array<int> element, array<ref VDA_Array> arrayOfElement) 
	{
		VDA_Array elementName = new VDA_Array();
		elementName.Set(element);
		arrayOfElement.Insert(elementName);
	}
}

(Could be extend to any types)