feat: save game system is working!

project.godot

@@ -680,6 +680,11 @@ _global_script_classes=[ {
 "path": "res://addons/escoria-core/game/core-scripts/esc/commands/set_interactive.gd"
 }, {
 "base": "ESCBaseCommand",
+"class": "SetItemCustomDataCommand",
+"language": "GDScript",
+"path": "res://addons/escoria-core/game/core-scripts/esc/commands/set_item_custom_data.gd"
+}, {
+"base": "ESCBaseCommand",
 "class": "SetSpeedCommand",
 "language": "GDScript",
 "path": "res://addons/escoria-core/game/core-scripts/esc/commands/set_speed.gd"
@@ -841,7 +846,7 @@ _global_script_class_icons={
 "ESCItemComponentInventoryChecker": "",
 "ESCItemComponentOutline": "",
 "ESCItemCountManager": "",
-"ESCItemWithTooltip": "",
+"ESCItemWithTooltip": "res://addons/escoria-core/design/esc_item.svg",
 "ESCLocation": "res://addons/escoria-core/design/esc_location.svg",
 "ESCMain": "",
 "ESCMigration": "",
@@ -851,7 +856,7 @@ _global_script_class_icons={
 "ESCObject": "",
 "ESCObjectManager": "",
 "ESCPlayer": "res://addons/escoria-core/design/esc_player.svg",
-"ESCPlayerWithTooltip": "",
+"ESCPlayerWithTooltip": "res://addons/escoria-core/design/esc_player.svg",
 "ESCProjectSettingsManager": "",
 "ESCResourceCache": "",
 "ESCResourceDescriptor": "",
@@ -914,6 +919,7 @@ _global_script_class_icons={
 "SetGlobalsCommand": "",
 "SetGuiVisibleCommand": "",
 "SetInteractiveCommand": "",
+"SetItemCustomDataCommand": "",
 "SetSpeedCommand": "",
 "SetStateCommand": "",
 "SetTooltipCommand": "",