Rework player state system to use an event subscription system to avoid directly calling methods on individual state and having to worry about validity

Entities/Characters/Player/Scripts/state_machine.gd

@@ -25,6 +25,11 @@ func QueueStateChange(to_state_enum: PlayerStateMachine.States, extra_parameters
 	queued_parameters = extra_parameters
 
 
+func SendEventToCurrentStateIfValid(signal_name: String, parameters: Variant = null) -> void:
+	if current_state._subscribed_events.has(signal_name):
+		current_state._StateMachine_OnEventSent(signal_name, parameters)
+
+
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
 	var children := states_container.get_children()