Free look camera and instrument panel

I made it possible to rotate around the plane and zoom in and out in external view and in the cockpit view you can rotate the camera inside the cockpit.  It was  difficult to make the  external camera collide with the terrain.  I used a CharacterBody3D node for that.  Most of the instruments were drawn with inkscape.  The artificial horizon is a Node3D and a vieport is used as its parent node and its texture is used with a TextureRect.