We've used a zip for the duration of the private beta but macOS users
expect a dmg. This commit changes both of our release workflows to begin
building a dmg instead of a zip.
This adds a new workflow for building and releasing _tagged versions_
of Ghostty. The workflow is triggered automatically by new tags in the
format of `vX.Y.Z` but can also be manually triggered by running the
workflow from the GitHub Actions UI.
Release artifacts are uploaded to a completely separate R2 bucket
with its own access policy, retention, API keys, and so on.
There is currently no way to switch between "channels" in the macOS
app. I will follow up with a separate commit to add this feature.
The focus of this commit is to store the dSYM files associated with
official macOS builds. dSYM files allow us to map crash reports to
source.
The dSYM files are primarily uploaded to our official blob storage where
all releases are also stored. We also upload the dSYM files to Sentry
since I'm experimenting with using that for crash reproting (note:
manual crash reporting, no automatic network traffic).
This commit also changes our blob URLs for releases to use the full
Git SHA rather than a build number. This is much easier to trace back.
