message: fix: add missing docstrings
diff: #pragma once
  #include "duckdb/common/constants.hpp"
  +#include "duckdb/common/enums/file_compression_type.hpp"
  +#include "duckdb/common/exception.hpp"
  #include "duckdb/common/file_buffer.hpp"
  -#include "duckdb/common/vector.hpp"
  #include "duckdb/common/unordered_map.hpp"
  -#include "duckdb/common/exception.hpp"
  -#include "duckdb/common/enums/file_compression_type.hpp"
  +#include "duckdb/common/vector.hpp"
  #include <functional>
  @@ -186,7 +186,11 @@ public:
  //! registers a sub-file system to handle certain file name prefixes, e.g. http:// etc.
  DUCKDB_API virtual void RegisterSubSystem(unique_ptr<FileSystem> sub_fs);
  DUCKDB_API virtual void RegisterSubSystem(FileCompressionType compression_type, unique_ptr<FileSystem> fs);
  +
  + //! Unregister a sub-filesystem by name
  DUCKDB_API virtual void UnregisterSubSystem(const string &name);
  +
  + //! List registered sub-filesystems, including builtin ones
  DUCKDB_API virtual vector<string> ListSubSystems();
  //! Whether or not a sub-system can handle a specific file path
  