Group templates under a internal subpackage

[Adirio]

Description

Template files are found in three pkg/scaffold/ subpackages:

• project
• v1
• v2

v2/internal belongs scaffolding machinery.

The following grouping and movement have been done:

• v2/internal has been moved to internal/machinery
• v1 has been moved to internal/templates/v1
• v2 has been moved to internal/templates/v2
• project contained files belonging to v1 and files being used by both versions. They have been moved to internal/templates/v1 and the ones that are also being used by v2 have been duplicated in internal/templates/v2.

Motivation

This PR is scoped under #1218

Closes #1264

[k8s-ci-robot]

Hi @Adirio. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[mengqiy]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Adirio, mengqiy

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[mengqiy]

/lgtm