Failing on macOS Sonoma due to logging directory issue

I installed to my Apple Silicon Mac via Homebrew and found that the launchd agent was failing due to a nonexistent `/usr/local/var/log` directory. I created the directory and gave myself write permissions, so it's working for me now. I'm not sure this is the truly correct answer, but I'll assume my own risks there.

I think the correct answer for a Homebrew package would be to point the launchd agent to `$HOMEBREW_PREFIX/var/log`.

For generic macOS users, would the right target be `~/Library/Logs`, which would also work for Homebrew people who are coming via tapping `gitjournal/tap`?