feat: proto builder image in ghcr

[faddat]

Description

This PR adds a proto builder image Gaia's repository directly that will be
available in ghcr.

Needed to merge #2462

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• confirmed the correct type prefix in the PR title
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[yaruwangway]

Hi @mmulji-ic, do we need proto builder image ? btw, where do we hold gaia image ? cc @mpoke

[mpoke]

Moved to draft as #2462 was moved to draft.

[github-actions]

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