Sentry-dart: Support `split-debug-info` and `obfuscate` for Flutter Desktop

[ueman]

Wee need to test

• split-debug-info and obfuscate on macOS
• split-debug-info and obfuscate on Linux
• obfuscate on Windows. There is no split-debug-info on Windows

Those options have not been tested. They might require changes in the SDK and/or on the server.
It could be that they already work, and in this case we don't need to do anything.

We need to update the docs after this has been tested.

[marandaneto]

let's add the windows/macos/linux support to this script

https://github.com/getsentry/sentry-dart/blob/main/flutter/example/run.sh

the way of uploading debug files is the same as iOS/Android -> https://github.com/getsentry/sentry-dart/blob/main/flutter/example/run.sh#L58-L60

we need to see if frames are symbolicated, file/function names are available and line number is also correct.

I believe macOS won't work if Flutter has the same format as iOS debug files, but let's try.

@bruno-garcia you may need to help us on Windows, would you be willing to do so? :)

[bruno-garcia]

Didn't seem to work: https://sentry.io/organizations/sentry-sdks/issues/2367778946/?project=5428562&query=is%3Aunresolved

We would need to add the debug_meta with the DLL's build_id of sorts. @jan-auer might have pointers.

[bruno-garcia]

.so on Windows? They really went all in with ELF it seems

[marandaneto]

indeed, we'd need to install the LoadAndroidImageListIntegration integration for Flutter Desktop, but not only, on Android, sentry-native is also responsible for loading that.
That means, either we ship sentry-native for Linux/Windows or we find a way to do it via Native code or ffi

macOS requires that too, so Sentry Cocoa needs to expose a way of getting the debug image list.
https://github.com/getsentry/sentry-cocoa/issues/1089

[ueman]

The Flutter docs state that obfuscate is not supported on Windows and Linux.

[bruno-garcia]

Makes it easier. On Windows and Linux we only need to bundle sentry-native to capture native crashes.