Provide 3.38 tag

[camlafit]

Hello

Since 89a93f4 , develop version looks compatible with 3.38 gnome. Should be nice to
update #327 and add gnome-shell-3.38 tag or at least allow update from https://extensions.gnome.org/

Thanks

[rrthomas]

Similarly now for GNOME 42!

[mwilck]

We can't update extensions.gnome.org. Only @elbenfreund would be able to do that.

[rrthomas]

Ah, thanks!

[mwilck]

Done.

[hedayat]

Thanks Martin for the fix. But, maybe its time for us to somehow push the new version without waiting for @elbenfreund anymore. For example by adding a number at the end as a new extension.