Init the godot project

- Add a first-view controller and a bunch of things
- First shooting implementation
- Remove heavy models and clean the project up

scenes/weapon/pistol.gd

@@ -0,0 +1,28 @@
+extends Node3D
+
+var bullet = load("res://scenes/weapon/bullet.tscn")
+var instance
+
+@onready var gun_anim = $Pistol/Deagle/GunAnimation
+#@onready var gun_barrel = $DEAGLE/CSGSphere3D
+@onready var gun_barrel = $Pistol/Deagle/RayCast3D
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+
+# TODO: Handle the shot logic
+func shot():
+	var main_root = get_node("/root/TestMap")
+	if Input.is_action_pressed("shot"):
+		if !gun_anim.is_playing():
+			gun_anim.play("Shoot")
+			instance = bullet.instantiate()
+			instance.position = gun_barrel.global_position
+			instance.transform.basis = gun_barrel.global_transform.basis
+			get_tree().get_root().add_child(instance)
+
+# TODO: Handle the reload logic
+func reload():
+	var pistol := $DEAGLE
+	pistol.rotate_z(-20.0)