[SKIP CI] .github: extract standalone testbench.yml from Main Actions

[marc-hb]

Among other benefits this will make it possible to enable and disable testbench from the Github web interface:

https://docs.github.com/en/actions/managing-workflow-runs/disabling-and-enabling-a-workflow

Signed-off-by: Marc Herbert marc.herbert@intel.com

[marc-hb]

This is ready to be merged.

Problem found and solved, this was all caused by main branch protection rules in https://github.com/thesofproject/sof/settings/branches (which I do not have access to, only admins do)

Removing the protection rules made the problem instantly go away on all affected PRs (no need to force push or anything).

[lgirdwood]

This is ready to be merged.

Problem found and solved, this was all caused by main branch protection rules in https://github.com/thesofproject/sof/settings/branches (which I do not have access to, only admins do)

Removing the protection rules made the problem instantly go away on all affected PRs (no need to force push or anything).

Thanks - this might not be needed. I may have a way forward as so far changes are not as invasive as originally expected.

[marc-hb]

Good news!

This extraction / separation is a Good Thing even if the current testbench stays enabled forever.

[marc-hb]

Unrelated MTL failures in https://github.com/thesofproject/sof/actions/runs/3277832496/jobs/5395553969 introduced by #6360, fixed submitted in #6439