Draft: Add CI components apiVersion description to blueprint

What does this MR do and why?

This MR adds a proposed description of how the CI Component's spec could look like with apiVersion and kind, to follow similar pattern implemented in other places, like Kubernetes / Backstage.io ➡ https://github.com/backstage/backstage/blob/master/docs/features/software-catalog/descriptor-format.md

/cc @dhershkovitch @fabiopitino @ayufan

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