[PACKAGE/BOARD] Add Retroarch v1.16.0.3 (#50)

* Add retroarch package

* libretro cores as separate packages

* Add libretro-super package

* Add core resources, move retroarch bin to /mnt/emus/retroarch dir

* add NxEngine assets + correct indendt

* [BOARD] add cores appLinks

* [GENIMAGE] test -d before running cp to not stderr

* [BOARD] add "cores" section in gmenu2x with all appLinks

* add PRBOOM data *.wad file

* [GENIMAGE] generate cores' script links in genimage.sh

* Add scummvm core & downgrade

* [GENIMAGE] don't run cores in verbose

* resort `core links` and update their icons

---------

Co-authored-by: Apaczer <94932128+Apaczer@users.noreply.github.com>

board/miyoo/boot/firstboot

@@ -599,6 +599,9 @@ if test -r "${BASEDIR}/configs/manifest"; then
 		fi
 	done
 fi
+echo "Renaming ${HOME}/retroarch directory to ${HOME}/.retroarch" | tee -a ${LOG}
+mv "${HOME}/retroarch" "${HOME}/.retroarch" | tee -a ${LOG}
+
 echo
 
 sync