programs: Add Uxn emulator (#272)

To build this, a zig compiler (tested: 0.14.1) is needed, run `zig build --release=fast`.
It will download https://github.com/chmod222/zuxn when building.

Co-authored-by: 宋文武 <iyzsong@member.fsf.org>
Reviewed-on: KolibriOS/kolibrios#272
Reviewed-by: Mikhail Frolov <mixa.frolov2003@gmail.com>
Reviewed-by: Burer <burer@kolibrios.org>
Co-authored-by: iyzsong <iyzsong@envs.net>
Co-committed-by: iyzsong <iyzsong@envs.net>

data/Tupfile.lua

@@ -205,6 +205,7 @@ extra_files = {
  {"kolibrios/emul/chip8/roms/", SRC_PROGS .. "/emulator/chip8/roms/*"},
  {"kolibrios/emul/kwine/kwine", SRC_PROGS .. "/emulator/kwine/bin/kwine"},
  {"kolibrios/emul/kwine/lib/", SRC_PROGS .. "/emulator/kwine/bin/lib/*"},
+ {"kolibrios/emul/uxn", SRC_PROGS .. "/emulator/uxn/uxn"},
  {"kolibrios/emul/uarm/", "common/emul/uarm/*"},
  {"kolibrios/emul/zsnes/", "common/emul/zsnes/*"},
  {"kolibrios/games/BabyPainter", "common/games/BabyPainter"},

data/common/File Managers/icons.ini

@@ -162,6 +162,7 @@ min=23
 nes=23
 sna=23
 snes=23
+rom=23
 bat=24
 sh=24
 sys=25

data/common/File Managers/kfar.ini

@@ -68,6 +68,7 @@ sna=/kolibrios/emul/e80/e80
 gb=/kolibrios/emul/gameboy
 gbc=/kolibrios/emul/gameboy
 min=/kolibrios/emul/pokemini
+rom=/kolibrios/emul/uxn
 nc=/kolibrios/utils/cnc_editor/cnc_editor
 kf=/sys/KF_VIEW
 csv=/sys/table

data/common/settings/assoc.ini

@@ -192,6 +192,7 @@ nc=/kolibrios/utils/cnc_editor/cnc_editor
 ch8=/kolibrios/emul/chip8/chip8
 md=/kolibrios/emul/dgen/dgen
 gen=/kolibrios/emul/dgen/dgen
+rom=/kolibrios/emul/uxn
 
 zip=$Unz
 7z=$Unz