Make translation files compatible with ALF

[dkozma]

Changes in this pull request

• Flattens our translation files in c2pa to make the compatible with ALF
• Copies our translations into c2pa-wc so that we can start translating them via ALF before replacing the current .str.json files

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [ ] All applicable changes have been documented
• [ ] Any TO DO items (or similar) have been entered as GitHub issues and the link to that issue has been included in a comment

[github-actions[bot]]

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[dkozma]

Closing since this was superseded by #159.