Log Exporter

[josh]

In the Settings view #70,

we should add a button for "Export Logs" that gathers up the OSLog data, makes a zip, and does the system "Share sheet" dance so people can save it to Finder or email (to us).

Resources:

• https://swiftwithmajid.com/2022/04/19/exporting-data-from-unified-logging-system-in-swift/
• https://onmyway133.com/posts/how-to-use-oslog-and-oslogstore-in-swift/