docs: add storage backend configuration reference tables

[immohamedadhil]

Closes #2748

Adds comprehensive storage_options configuration reference tables to each storage backend documentation page, making it easy for users
to discover all available configuration keys without having to dig through the Rust object_store crate docs.

Changes

Configuration Reference Tables Added

• s3.md: Added configuration reference table (20+ S3 keys), Delta Lake specific options (locking, DynamoDB), and supported URL
  schemes
• adls.md: Added configuration reference table (18 Azure keys) covering all authentication methods (account keys, service principal,
  SAS, managed identity) and URL schemes
• gcs.md: Added configuration reference table (5 GCS keys), authentication methods section, and URL schemes
• special_configuration.md: Added common client options table (17 keys) that work across all backends (HTTP timeouts, proxies,
  connection pooling, etc.)

S3-Compatible Services Documentation

• s3-like.md: Added detailed configuration guides for 5 S3-compatible services:
  • Cloudflare R2 (with conditional put support)
  • MinIO (self-hosted, Docker-compatible)
  • Alibaba Cloud OSS (Asia-Pacific regions)
  • LocalStack (local testing/development)
  • Ceph/RADOS Gateway (enterprise storage)

Documentation Improvements

• lakefs.md: Replaced TODO placeholder with working Python code example for cleaning up stale transaction branches

Notes

• All configuration keys sourced from the object_store crate's config enums
• Each section links to authoritative Rust documentation for complete reference
• Existing content preserved - only added new sections
• Follows MkDocs Material style with proper admonitions and code examples
• Total: 342 lines of documentation added across 6 files

This contribution was created with assistance from Claude.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.62%. Comparing base (bbce1a1) to head (acf8588).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4173   +/-   ##
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  Coverage   76.62%   76.62%           
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  Files         166      166           
  Lines       47030    47030           
  Branches    47030    47030           
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  Hits        36036    36036           
  Misses       9252     9252           
  Partials     1742     1742           

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