make all same-module imports relative, the rest absolute

This makes sorting more consitent.

pkgs/clan-cli/clan_cli/flash.py

@@ -11,8 +11,7 @@ from pathlib import Path
 from tempfile import TemporaryDirectory
 from typing import Any
 
-from clan_cli.api import API
-
+from .api import API
 from .clan_uri import FlakeId
 from .cmd import Log, run
 from .completions import add_dynamic_completer, complete_machines