* refactor: replace new_object_layer_fn with get_validated_store for bucket validation * feat: add validation for object tagging limits and uniqueness * Apply suggestion from @Copilot Co-authored-by: Copilot <[email protected]> * Apply suggestion from @Copilot Co-authored-by: Copilot <[email protected]> * feat: add EntityTooSmall error for multipart uploads and update error handling * feat: validate max_parts input range for S3 multipart uploads * Update rustfs/src/storage/ecfs.rs Co-authored-by: Copilot <[email protected]> * fix: optimize tag key and value length validation checks --------- Co-authored-by: damon <[email protected]> Co-authored-by: Copilot <[email protected]>