Add option to record dumps even though the dump watcher tab is not open

[superDuperCyberTechno]

I propose that you add the option to record dumps regardless of whether or not the dump watcher tab is open in the Telescope interface.

This could be done by allowing the TELESCOPE_RECORD_DUMP_WATCHER_ALWAYS environment variable to control this outcome.

This can easily be achieved if we change L43 in DumpWatcher to the following:

if (! env('TELESCOPE_RECORD_DUMP_WATCHER_ALWAYS', false) && ! $this->cache->get('telescope:dump-watcher')) {
    return;
}

[driesvints]

Feel free to attempt a PR 👍

[superDuperCyberTechno]

Will do.

EDIT: #1199