Added gatling gun and railgun

game/entities/weapons/railgun/railgun_projectile.gd

@@ -0,0 +1,9 @@
+extends AbstractProjectile
+
+
+func _ready() -> void:
+	var texture := PlaceholderTexture2D.new()
+	texture.size = Vector2(6, 6)
+	$Sprite2D.texture = texture
+	
+	super._ready()