GD-124: Auto debugger attach for JetBrains Raider to debug tests

[MikeSchulze]

Why

see https://github.com/MikeSchulze/gdUnit4Net/issues/124

What

• add new test runner argument --attach_debugger, the test runner checks and do wait until the debugger is attached to the process
• some small cleanups

[MikeSchulze]

@van800 I try to auto attach the Rider debugger but without success. If you have any insights, you are welcome to join this task

What i see is a difference in the Raider TestHost implementations https://github.com/JetBrains/godot-support/blob/4a83b62eb11601e4cf5f3f5f339929a9989095dd/resharper/src/UnitTesting/GodotTestRunnerHost.cs vs https://github.com/JetBrains/godot-support/blob/4a83b62eb11601e4cf5f3f5f339929a9989095dd/resharper/src/UnitTesting/GodotGdUnitTestRunnerHost.cs

the GodotTestRunnerHost does some extra stuff for debugging where is missing in the GodotGdUnitTestRunnerHost

Any ideas how to solve this issues are welcome.

[van800]

That is an interesting idea. I will look into it. A similar feature to wait for debugger exists in Unity by the name "Wait for Managed Debugger".

GodotTestRunnerHost works for Godot 3 (mono).