feat(storage): support Jindo for OSS scan planning

[XiaoHongbo-Hope]

Purpose

Allow Rust scan planning to use an installed JindoSDK for OSS metadata and index reads. The existing OpenDAL OSS implementation remains the default.

Changes

• add an optional storage-jindo feature selected by fs.oss.impl=jindo
• dynamically load the Jindo C ABI without bundling an SDK binary
• support object stat, ranged reads, suffix reads, and full reads
• run blocking SDK calls on Tokio blocking workers
• discover the SDK through an explicit path, environment variables, JINDOSDK_HOME, or an installed pyjindosdk package
• fail explicitly for writes, deletes, copies, and listings in this initial read-only integration

Validation

• Jindo configuration and backend selection unit tests
• Python SDK discovery unit test
• default OSS and storage-jindo feature builds
• Clippy with warnings denied
• read-only end-to-end planning against an OSS-backed REST catalog using automatic pyjindosdk discovery

Notes

No JindoSDK binary is linked or packaged by this project. Selecting Jindo without the feature or a loadable SDK returns a configuration error.