Save Workflow improvement // misc improvements — Stellar Ghosts Settlers Steam update #104032

This update brings a new warning for when player decide to press the "New game " button. Warning letting player go back to its current saved game or confirm deletion to create a brand new game. Miscellaneous changes: Addition of new weapons (Grenade Launcher and Homing fire shot pistol) update to mission 6 mood and lighting ambiance update to mission 1 and 2 to use newly added weapon. same for arena 1 fixes to Giant Worm boss character where a VFX wouldn't appear during specific attack sequence