add name-id7-versioned file match policy

[e1y4s]

The existing name-id7 file-match policy appends truncated iCloud asset ID to base filenames, but not to adjusted or alternative versions.

When multiple edited versions share the same original basename and are downloaded into the same folder, their filenames collide and only the first one is saved. Subsequent ones are skipped.

Step	Original filename	Asset ID	Resulting filename (adjusted)	Status
1	IMG_1234.JPG	QVpTNGN	IMG_1234-adjusted.JPG	✅ downloaded
2	IMG_1234.JPG	QXpUOGx	IMG_1234-adjusted.JPG	❌ skipped (already exists)

So, because the ID isn’t carried into the adjusted/alternative filenames, different assets can produce the same adjusted filename.

Proposal

Introduce a new policy, name-id7-versioned, which behaves like name-id7 but also carries the truncated asset ID into adjusted and alternative versions.

Step	Original filename	Asset ID	Resulting filename (adjusted)	Status
1	IMG_1234.JPG	QVpTNGN	IMG_1234_QVpTNGN-adjusted.JPG	✅ downloaded
2	IMG_1234.JPG	QXpUOGx	IMG_1234_QXpUOGx-adjusted.JPG	✅ downloaded

Likewise for alternative.

This new behavior can be selected with --file-match-policy name-id7-versioned.

Benefits

• Prevents filename collisions for edited versions.
• Preserves a clear mapping between originals and their edited versions.
• Safer for syncing/backup pipelines that rely on unique filenames.

Backward compatibility

• Default behavior is unchanged.
• Existing policies (name-size-dedup-with-suffix, name-id7) continue to work as before.