Default TFAR radio channels

Through CBA settings players should be able to set a default TFAR radio frequency for each channel. Here's some example code that may be relevant.

```sqf
private _srRadio = [] call TFAR_fnc_activeSwRadio;
private _loadedSR = false;
if (!isNil "_srRadio") then {
[_srRadio, _savedSRSettings] call TFAR_fnc_setSwSettings;
private _loadedSR = true;
};

private _lrRadio = [] call TFAR_fnc_activeLrRadio;
private _loadedLR = false;
if (!isNil "_lrRadio") then {
[_lrRadio, _savedLRSettings] call TFAR_fnc_setLrSettings;
private _loadedLR = true;
};
```