hotdata 0.6.0

Changed

• feat: support async table loads and append mode
• feat(uploads): support streaming uploads with on-demand part URLs
• Breaking: results and query runs are now scoped to a database via the
  required X-Database-Id header. The generated ResultsApi / QueryRunsApi
  methods (get_result, list_results, get_query_run, list_query_runs)
  gain a required x_database_id argument, and the hand-written ergonomic
  helpers match: hotdata.arrow.ResultsApi.get_result_arrow /
  stream_result_arrow and hotdata.query.QueryApi.wait_for_result take the
  database id, and QueryApi.query's truncation auto-follow forwards the
  query's database scope (the X-Database-Id header, or the request-body
  database_id when no header is set) to its result and query-run fetches.