Redid all of the property panel UI prefabs (oof)
Implemented saving and loading of the game state
Moved sector generation to sector constructor (along with loading from save file)
Entity settings now separate from player settings
Player settings (incl. saved run) now statically accessible from game manager
Added animations and submenus to the main menu
Unified main menu settings and properties panel styles for prefab reusability
Items will switch themselves off below a customizable threshold to avoid damage
Player can toggle thermal override to disable safety shutdown
Selecting an item allows player to select whether the item will override
Clicking on the background of an inventory panel will display general ship settings (including thermal shutdown threshold)
Performance Stat evaluation has been moved to EquippedItem, slight performance improvement
Item online and active status are now reactive properties
Created player settings file to store e.g. shutdown threshold
Fixed crash when entering wormhole while enemies are visible
