Ports: Add Duke Nukem 3D

This adds 'JonoF's Duke Nukem 3D Port'.

Parts of the network-related stuff has been patched out.
See patch: patches/0002-mmulti.c-ifdef-out-network-related-stuff-we-currentl.patch

Notes:
- Some sound work seems to be needed. During the title screen and
  gameplay SFX works, but music does not play. At the ending screen of
  Hollywood Holocaust music does play.
- GTK has been disabled, by default it will start in fullscreen, to get
  back to windowed mode can be done through the Video Settings.
- OpenGL support has been disabled, as far as I can tell it will need
  OpenGL 2.0 support which we do not currently have.
- True 3D renderer has been turned on.

Ports/jfduke3d/patches/0001-compat.h-Recognize-endianness-of-SerenityOS-by-picki.patch

@@ -0,0 +1,27 @@
+From af5cc138782430963d05b2f92e60916f48c9f807 Mon Sep 17 00:00:00 2001
+From: Kenneth Myhra <kennethmyhra@gmail.com>
+Date: Mon, 1 May 2023 17:33:37 +0200
+Subject: [PATCH 1/2] [compat.h] Recognize endianness of SerenityOS by picking
+ up endian.h
+
+We have endian.h so let's pick that header.
+---
+ include/compat.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/jfbuild/include/compat.h b/jfbuild/include/compat.h
+index 8a879b0..66ddcad 100644
+--- a/jfbuild/include/compat.h
++++ b/jfbuild/include/compat.h
+@@ -100,7 +100,7 @@ typedef unsigned __int64 uint64_t;
+ # define NULL ((void *)0)
+ #endif
+ 
+-#if defined(__linux)
++#if defined(__linux) || defined(__serenity__)
+ # include <endian.h>
+ # if __BYTE_ORDER == __LITTLE_ENDIAN
+ #  define B_LITTLE_ENDIAN 1
+-- 
+2.40.1
+