Fixes an issue where we'd end up trying to link with the managed assembly instead:
> ld: warning: ignoring file .../bin/Debug/net6.0-ios/MyBinding.dll, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-unsupported file format ( 0x4D 0x5A 0x90 0x00 0x03 0x00 0x00 0x00 0x04 0x00 0x00 0x00 0xFF 0xFF 0x00 0x00 )
Also add a warning if we run into other types of libraries in the future to
make it easier to diagnose.
We used to do the following:
1. Have abstract task classes in the Xamarin.*.Task.Core assembly (with all
the actual code for the task in question to work properly on macOS).
2. Subclassed task in the Xamarin.*.Task assembly, which did nothing.
3. On Windows we'd inject a different Xamarin.*.Task assembly, with
Windows-specific overrides for the implementation in the abstract base
class.
However, we no longer do point 3, which means that we no longer need to split
our tasks across two assemblies.
This means that we can remove the Xamarin.\*.Task.Core assemblies, and move all
the code into the corresponding Xamarin.\*.Task assembly instead.
This simplifies our code and speeds up the build.
There are more simplifications that can be done; those will come in later PRs.
Rolf Bjarne Kvinge