Doors now work from the inside

New clientside model merges with portal view on exterior and shows on
interior. Visible line from the outside though, looking into it. The two
screens have been 3D2D'd and nearly ready for action. They have a test
screen on them at the moment. Slightly adjusted collision model for
interior.

Updated interior model and fixed view roll bug. Unfortunately this means that entering a rotated tardis no longer looks as smooth, but this can be fixed with a transition from the initial roll value to 0, as is done in portal itself.

Hotfix: Reverted interior movetype, fixing interior collision with other props.

Hotfix: Fixes errors when trying to throw entities with invalid physobjects in (bugbait etc) and fixed decal crash (but decals no longer work on the interior).

Multiplayer hotfix for 'Couldn't include file 'worldportals\teleport_cl.lua' (File not found) (@lua/autorun/worldportals_init.lua (line 20))'

Portals are now actually portals

When the doors are open, the portals are active and can be walked through. Added utility function Exterior:DoorOpen. Added entity hook ToggleDoor. Moved door code into sh_doors. Set interior owner. E now toggles door, Alt-E teleports in. Slightly adjusted portal positions and sizes. Portal only renders when door is open, greatly improving performance. Prevented physgun being able to pick up the interior. Added spawnicon. Added addon.json for workshop.

Testing update batch file

Initial Commit