Add launch agent for OSX users

[Ben Oakes]

See Maid as a Daemon on OS X

Related: #126
CC: @jurriaan

[Xinjiang Shao]

@jurriaan @benjaminoakes would it make more sense to integrate with homebrew , and use something like brew services start maid to Install and start the service at login

[Ben Oakes]

I'd be interested in seeing a pull request with this if anyone is interested in putting it together.

[malone hedges]

Would love to see this integrated into Homebrew. Is anyone going to work on this in the near future?

[Rock]

Going through old issues and triaging.

Is there still an interest in this feature? Popularity will affect implementation prioritization.

[github-actions]

This issue has been open for 30 days without any activity. Remove no-issue-activity label or comment to avoid automatic closure in 7 days.

[Piers Olenski]

Yes please!