Adds downfall env to tests and hub

[edbeeching]

No description provided.

[Ivan-267]

Some of my examples had the default scene set to onnx inference for easier running, but it doesn't allow tests to work. I've set training scenes to default in edbeeching/godot_rl_agents_examples#28.

It will require updating the datasets on huggingface, e.g. https://huggingface.co/datasets/edbeeching/godot_rl_3DCarParking

[edbeeching]

Thanks @Ivan-267 , the tests seem to be working now. Ok to merge?

[Ivan-267]

Not sure what's wrong with the windows tests. I'll rerun and check the results later.

[Ivan-267]

I've downloaded the envs from the hub manually and was able to reproduce the issue with BallChase.
I will try to find out the cause locally.

Seems to work fine on the second and third try. Will have to test more.

Another thing to check after finding out the cause is why the linux tests are running fine.

[Ivan-267]

It works from the editor, but when running the prebuilt exe of e.g. BallChase, I get an error that the data folder including net assemblies is missing. It does work after that on my PC, but might cause the issue on the test server.

Edit: I tried building and got the error. It's related to the csproj file.

E.g. in BallChase:

<Project Sdk="Godot.NET.Sdk/4.2.1">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <EnableDynamicLoading>true</EnableDynamicLoading>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="1.14.1" />
    <PackageReference Include="Microsoft.ML.OnnxRuntime.DirectML" Version="1.14.1" />
    <PackageReference Include="Microsoft.ML.OnnxRuntime.Gpu" Version="1.14.1" />
    <PackageReference Include="System.Numerics.Tensors" Version="0.1.0" />
  </ItemGroup>
</Project>

Having three onnxruntimes causes conflicts. It should only be the first one. We might have to update the envs with new plugins or at least .csproj files.

I've started finished the update process in: edbeeching/godot_rl_agents_examples#29

I'll update all envs that timed out in tests to the latest plugin and .csproj/.sln files.

[edbeeching]

@Ivan-267 that fixed everything, thanks. Merging.