extract: whl files support (#7045)

plugins/extract/_extract

@@ -3,5 +3,5 @@
 
 _arguments \
   '(-r --remove)'{-r,--remove}'[Remove archive.]' \
-  "*::archive file:_files -g '(#i)*.(7z|Z|apk|bz2|deb|gz|ipsw|jar|lzma|rar|sublime-package|tar|tar.bz2|tar.gz|tar.xz|tar.zma|tbz|tbz2|tgz|tlz|txz|war|xpi|xz|zip)(-.)'" \
+  "*::archive file:_files -g '(#i)*.(7z|Z|apk|bz2|deb|gz|ipsw|jar|lzma|rar|sublime-package|tar|tar.bz2|tar.gz|tar.xz|tar.zma|tbz|tbz2|tgz|tlz|txz|war|whl|xpi|xz|zip)(-.)'" \
     && return 0

plugins/extract/extract.plugin.zsh

@@ -46,7 +46,7 @@ extract() {
 			(*.xz) unxz "$1" ;;
 			(*.lzma) unlzma "$1" ;;
 			(*.z) uncompress "$1" ;;
-			(*.zip|*.war|*.jar|*.sublime-package|*.ipsw|*.xpi|*.apk) unzip "$1" -d $extract_dir ;;
+			(*.zip|*.war|*.jar|*.sublime-package|*.ipsw|*.xpi|*.apk|*.whl) unzip "$1" -d $extract_dir ;;
 			(*.rar) unrar x -ad "$1" ;;
 			(*.7z) 7za x "$1" ;;
 			(*.deb)