mime: added `audio/ac3` and `application/x-shellscript`

mime/.config/mimeapps.list

@@ -20,6 +20,7 @@ audio/mpeg=mpv.desktop
 audio/wav=mpv.desktop
 audio/flac=mpv.desktop
 audio/x-aac=mpv.desktop
+audio/ac3=mpv.desktop
 audio/vnd.dts=mpv.desktop
 audio/vnd.dts.hd=mpv.desktop
 video/mpeg=mpv.desktop
@@ -39,6 +40,7 @@ application/x-7z-compressed=engrampa.desktop
 application/x-cd-image=engrampa.desktop
 application/gzip=engrampa.desktop
 application/x-bzip=engrampa.desktop
+application/x-shellscript=org.xfce.mousepad.desktop
 application/vnd.debian.binary-package=gdebi.desktop
 application/pdf=org.pwmt.zathura-pdf-poppler.desktop
 x-scheme-handler/http=firefox.desktop