Improve Tekton Object Interface

[chitrangpatel]

As highlighted in https://docs.google.com/document/d/1IPE_xycMZ7I2ni98wPLFogY5xJEREdXuYwOuPnPL5Po/edit, when adding support for v1 objects, we need to replicate usage in a lot of files which is going to be tedious. We will need to keep support for v1beta1 around as well. It is unreasonable to keep two copies of all the functions that rely on v1beta1 types.

We use the tekton object interface quite a bit but its still not as heavily utilized in our formatting logic as it should be. This issue wants to investigate and improve the Tekton Object interface so that it can be utilized more heavily in our codebase.

[chitrangpatel]

/assign @lcarva

[tekton-robot]

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