Function normalize_path_to_uri 

pub fn normalize_path_to_uri(path: &str) -> String

Normalizes a path to URI format for consistent object store usage.

If the path is already a URI (contains “://”), returns it as-is. Otherwise, converts local paths to file:// URIs with proper cross-platform handling.

Supported URI schemes:

• s3:// for AWS S3
• gs:// or gcs:// for Google Cloud Storage
• az:// or abfs:// for Azure Blob Storage
• http:// or https:// for HTTP/WebDAV
• file:// for local files

Cross-platform Path Handling

• Unix absolute paths: /path/to/file → file:///path/to/file
• Windows drive paths: C:\path\to\file → file:///C:/path/to/file
• Windows UNC paths: \\server\share\file → file://server/share/file
• Relative paths: converted to absolute using current directory