Migrate Windows CI from Appveyor to GitHub Actions #1070
Description
We'd want to have fewer CI platforms to keep track of.
See also https://chat.zulip.org/#narrow/stream/16-desktop/topic/appveyor.20ci.
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We'd want to have fewer CI platforms to keep track of.
See also https://chat.zulip.org/#narrow/stream/16-desktop/topic/appveyor.20ci.