Relocate package in pkg folder to internal since none of the current packages are designed for sharing purposes

[ruanxin]

Description

In Go projects, the pkg folder is typically used to store packages intended for use by other projects. However, for existing packages under lifecycle manager pkg , none of them are designed for sharing purposes. We should put them under internal as private package

Reasons

Aligned with Golang project structure best practices.

https://github.com/golang-standards/project-layout/tree/master/pkg

Acceptance Criteria

• relocate package under pkg folder to internal

Feature Testing

No response

Testing approach

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Attachments

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