Add a few tests to get started on debugging. The goal of this CL is to get the Fuchsia bots running the tests without infra specific issues. After landing this, failures will be in test framework files (e.g. test/testsupport folder) and WebRTC code. Bug: b/232740856 Change-Id: I332607fe875334769e7dadf6696d878a23a7e69f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/280440 Reviewed-by: Andrey Logvin <landrey@webrtc.org> Reviewed-by: Andrey Logvin <landrey@google.com> Reviewed-by: Jeremy Leconte <jleconte@google.com> Commit-Queue: Jeremy Leconte <jleconte@google.com> Cr-Commit-Position: refs/heads/main@{#38596}