Add Box64 app for 64-bit OSes only

apps/Box64/credits

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+ptitseb for creating box64
+Tejas Singh YT for the scripts(Checkout my YT channel :)

apps/Box64/description

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+Easily emulate x86_64 linux apps on Raspberry Pi.
+
+Box64 lets you run x86_64 Linux programs (such as games) on non-x86_64 Linux systems, like ARM (host system needs to be 64bit little-endian).
+
+Because Box64 uses the native versions of some "system" libraries, like libc, libm, SDL, and OpenGL, it's easy to integrate and use with most applications, and performance can be surprisingly high in many cases.

apps/Box64/install-64

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+#!/bin/bash
+
+DIRECTORY="$(dirname "$(dirname "$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )")")"
+
+function error {
+  echo -e "\\e[91m$1\\e[39m"
+  exit 1
+}
+
+"${DIRECTORY}/pkg-install" "cmake" "$(dirname "$0")" || exit 1
+
+rm -rf ~/box64
+git clone https://github.com/ptitSeb/box64 || error 'Failed to clone box64 repository!'
+cd box64 || error 'Failed to change directory'
+mkdir build; cd build; cmake .. -DRPI4ARM64=1 -DCMAKE_BUILD_TYPE=RelWithDebInfo || error 'Failed to make directory'
+make -j8 || error 'Failed to compile'
+sudo make install || error 'Failed to run "sudo make install"'
+sudo systemctl restart systemd-binfmt || exit 1

apps/Box64/uninstall

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+#!/bin/bash
+
+DIRECTORY="$(dirname "$(dirname "$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )")")"
+
+function error {
+  echo -e "\\e[91m$1\\e[39m"
+  exit 1
+}
+
+if [ ! -e ~/box64 ];then
+  echo "The $HOME/box64 folder does not exist. Nothing to do!"
+  exit 0
+fi
+
+cd ~/box64/build || error "Failed to enter ~/box64/build!"
+sudo make uninstall || error "Failed to uninstall box64!"
+
+rm -rf ~/box64 || error "Failed to delete the $HOME/box64 directory!"
+

apps/Box64/website

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+https://github.com/ptitSeb/box64

data/categories/structure

@@ -8,6 +8,7 @@ AstroMenace|Games
 BalenaEtcher|Tools
 BlockPi|Editors
 Bongo Cam|Multimedia
+Box64|Tools
 Box86|Tools
 Boxy SVG|Editors
 Browsh|Internet
@@ -46,6 +47,7 @@ Libreoffice MS theme|Eyecandy
 LibrePCB|Editors
 Lightpad|Eyecandy
 Lokinet|Internet
+Lunar Client|Games
 Mac OS Theme|Eyecandy
 Min Browser|Internet
 Minecraft Bedrock|Games
@@ -92,6 +94,7 @@ Theme Saver|Eyecandy
 Timeshift|Tools
 tldr|Tools
 Tor Browser|Internet
+Turbowarp|Editors
 Ulauncher|Eyecandy
 Update Buddy|Tools
 USBImager|Tools
@@ -109,5 +112,3 @@ Wine (x86)|Tools
 WPS Office|Editors
 YouTubuddy|Multimedia
 Zoom|Internet
-Lunar Client|
-Turbowarp|Editors