Take over maintenance of Testling

[YerkoPalma]

Testling is referenced in the browserify site as a tool to test in all major browsers, but it has for a long time a message telling it is not working. I guess it would be good to add it to the browserify org to gain some attention and work on a fix if possible.

[balupton]

Migrated this open issue from #7 to https://github.com/orgs/browserify/discussions/24. No action required

[balupton]

Just checked, testling is no longer referenced on the Browserify site. Do we still care for this?

[ljharb]

I now maintain the cli, but the service is long dead.

[balupton]

Okie, we can close?