A row from DuckDB's pragma_database_size table function.
Summary
Types
@type t() :: %QuackDB.Storage.DatabaseSize{ block_size: integer() | nil, database_name: String.t() | nil, database_size: String.t() | nil, free_blocks: integer() | nil, memory_limit: String.t() | nil, memory_usage: String.t() | nil, total_blocks: integer() | nil, used_blocks: integer() | nil, wal_size: String.t() | nil }