Richer oxide-image data source (full output attributes, lookup by ID, most_recent + filters)

Problem

The oxide-image data source takes an exact image name and returns only image_id. Users coming from amazon-ami / digitalocean-image expect substantially more:

• Full output attributes: name, OS, version, size, block size, digest, description, creation timestamp — not just the ID.
• Lookup by ID in addition to name.
• most_recent + filter semantics so templates can express "latest noble image" instead of hard-coding an exact name that changes every release.

Additionally, silo-vs-project lookup currently relies on an SDK serialization quirk — the code comment in component/data-source/image/data_source.go:87 admits it: "This relies on the Go SDK omitting empty strings from serialization to fetch silo images." This should be explicit.

Fix

• Expand DatasourceOutput with the image attributes above.
• Add most_recent and name-filter/regex selection over ImageList.
• Make project vs silo lookup explicit rather than serialization-dependent.
• Consider whether a plural oxide-images data source is warranted or if filters on the singular one suffice.

Start in component/data-source/image/data_source.go, especially the lookup around line 87, and inspect DatasourceOutput and the ImageList usage. Define how project versus silo lookup, ID or name selection, filters, and most_recent interact; done means the data source returns the requested image attributes and supports the documented selection behavior without relying on SDK serialization.