/bin/twn: support run command for --target=web

bin/twn

@@ -11,7 +11,16 @@ case "$1" in
     build    ) "$toolpath"/twnbuild "${@:2}"
                ;;
 
-    run      ) $0 build "${@:2}" && ./$exe
+    run      ) $0 build "${@:2}"
+               if [[ "$*" == *"--target=web"* ]]; then
+                   if [ "$OS" = "Windows_NT" ]; then
+                       explorer "http://0.0.0.0:8000/$exe.html" & python3 -m http.server
+                   else
+                       xdg-open "http://0.0.0.0:8000/$exe.html" & python3 -m http.server
+                   fi
+               else
+                   ./$exe
+               fi
                ;;
 
     gdb      ) unset DEBUGINFOD_URLS