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.
This adds more metadata back into the Info.plist for a build. This
metadata is used with the About window. The reason I want the build
number back is so that we have a monotonically increasing number to do
self-updating with (i.e. Sparkle).
We previously used the "screen.viewportIsBottom" check but this is
always true since awhile back since we copy only the viewport now. A
cleaner check really is that we only track the cursor cell if we're even
drawing the cursor.
