Add per-weapon scene and better first person view

scenes/weapon/guns/ak/with_hands.gd

@@ -0,0 +1,26 @@
+extends Node3D
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+@onready var barrel: Node3D = $Barrel
+
+func shoot() -> Error:
+	# -- TODO: It should not be hardcoded
+	var path := "res://scenes/weapon/guns/ak/bullet.tscn"
+	if not ResourceLoader.exists(path):
+		return ERR_DOES_NOT_EXIST
+	var scene: PackedScene = ResourceLoader.load(path)
+	if not scene.can_instantiate():
+		return ERR_CANT_OPEN
+	var node: Node3D = scene.instantiate()
+	var root := get_tree().get_root()
+	node.position = barrel.global_position
+	node.transform.basis = barrel.global_transform.basis
+	root.add_child(node)
+	return OK
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass