feat: include config side in :VEHICLE:CREATE: command (#82)

Adds `str side _x` as index [6] to the vehicle creation data sent to the
extension. This provides the vehicle's configured faction side (WEST,
EAST, GUER, CIV) at creation time, so the extension and web frontend
can display correct faction colors for vehicles even when their crew is
empty.

Previously, vehicle side was only available per-frame in :VEHICLE:STATE:
(index 11), and the JSON export hardcoded it as "UNKNOWN" on the entity
definition. This caused vehicles to render as black (dead) icons
whenever no crew was present.

Author: fank

addons/recorder/fnc_captureLoop.sqf

@@ -213,7 +213,8 @@ GVAR(PFHObject) = [
           _class, //3
           getText (configFile >> "CfgVehicles" >> _vehType >> "displayName"), //4
           typeOf _x, //5
-          format ["%1", [_x] call BIS_fnc_getVehicleCustomization] //6
+          format ["%1", [_x] call BIS_fnc_getVehicleCustomization], //6
+          str side _x //7
         ];
         _x setVariable [QGVARMAIN(newVehicleData), _newVehicleData];