[desktop] Add zip make target

Summary: The format for the macos file for the auto updating is a zipped .app. This diff adds it to the make targets so it's created automatically. Adding ashoat because there's a new dependency.

Test Plan: Check if the .zip is correctly created.

Reviewers: tomek, atul, ashoat

Reviewed By: ashoat

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D6323