add CBA_fnc_createNamespace and CBA_fnc_deleteNamespace

[commy2]

This is a faster alternative to creating pseudo-namespaces compared to createVehicleLocal with Logic or similar. It also never runs into any limitations regarding group count and is strictly local.
It is based on creating a location outside of the map which is used as container for variables.

Perf test:
call CBA_fnc_createNamespace;
0.0207031 ms
(10000/10000)

"Logic" createVehicleLocal [-1000,-1000,0];
0.138744 ms
(6649/10000)

Usage:

test_namespace = call CBA_fnc_createNamespace;
test_namespace setVariable ["test_value", 123];

test_namespace getVariable "test_value"
-> 123

allVariables test_namespace
["test_value"]

test_namespace call CBA_fnc_deleteNamespace;

Only downside is, that the getVariable ARRAY syntax does not work it.

[Killswitch00]

SCRIPT(createNamespace);

[nicolasbadano]

Perfect for ACE. Thanks