textproc/meilisearch: add rc script to allow running as a daemon

[dch]

Summary

Minimal rc script to allow running Meilisearch as a service.

If you want, I can extend pkg-plist to auto-create dir & configs:

/var/db/meilisearch
/usr/local/etc/meilisearch/meilisearch.toml

But as the port today doesn't use these, this feels like a good
mid-point to stop at.

[ashish]

Hi,

My apologies for getting on to this so late.

I don't use meilisearch anymore, but if you use it, and don't mind maintaining it, then feel free to take the maintainership. I just pushed an update few minutes ago.

If you're not interested in maintaining it, I'll review this diff this week, and get back to you.

Thanks!

[dch]

I pushed the rc update, but I'm not using it in the project I was planning to.