This adds steps to our android debug smoke build to upload a debug apk on merges to main, retained for 60 days. This can be used to help test and troubleshoot builds in between Android releases.
This adds a workflow into PRs to build the iOS and Android apps, just to verify that they aren't completely broken / unable to build. They're debug builds, so it won't completely mirror the release build, but that allows us to avoid getting signing keys in the workflow.
This updates flutter to 3.24.1, the latest stable version, and also updates our flutter dependencies to latest.
It targets the latest android sdk, 34, which is required if we want to publish a new version to the Google Play store.
I also needed to make a few adjustments to handle deprecations. The biggest change is that I needed to wrap the main widget in MaterialApp to avoid problems with AdaptiveSwitch in iOS.