TEP-0152: Tekton Conformance Verification

[JeromeJu]

This commit proposes the Tekton conformance verification.

/kind tep

[pritidesai]

/assign @afrittoli /assign @dibyom

[JeromeJu]

Thanks @vdemeester for the review, I've updated the TEP with the section clarifying the process and how the verification from our community side works within a dedicated conformance repo (mirroring what kubernetes does for their conformance certification). PTAL 🙏

[JeromeJu]

I've addressed most of the comments for now, would you mind taking another look at this ? cc @dibyom @vdemeester
thanks for the time in advance.

[dibyom]

/approve

(Vincent is on leave so I think we may need to find an additional reviewer)

[tekton-robot]

@vdemeester:

In response to [this](https://github.com/tektoncd/community/pull/1129#pullrequestreview-1946391691): >/meow Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dibyom, vdemeester

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Needs approval from an approver in each of these files: - ~~[teps/OWNERS](https://github.com/tektoncd/community/blob/main/teps/OWNERS)~~ [dibyom,vdemeester] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[dibyom]

/lgtm