Translate `test/data` YAML files into in-code specs

[HeavyWombat]

With the bundle end to end tests, a prototype style build and buildrun spec definition was introduced: https://github.com/shipwright-io/build/blob/main/test/e2e/e2e_bundle_test.go#L60-L69

Migrate the existing YAML files in test/data into the prototype definitions so that the actual test code and the spec are done in the same place. This should also reduce the overall amount of YAML files in the repository.

[adambkaplan]

Accepting this into the general backlog. Marking this as a good first issue for new contributors.

[coreydaley]

/assign @aryaman02

[openshift-ci[bot]]

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/assign @aryaman02

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[coreydaley]

/assign @aryaman02