feat: implement Trello list management

Add 4 list management tools extending the Trello client:
- trello_create_list — create a new list on a board
- trello_rename_list — rename an existing list
- trello_archive_list — archive a list
- trello_move_list — move a list to a new position

Also update the auth spec doc to reflect the PR #5 review fixes
(TypedDict contracts, updated disconnect message).

Issue: #3

tests/test_auth.py

@@ -325,5 +325,5 @@ class TestPluginMetadata:
         assert PLUGIN_NAME == "trello-plugin"
         assert isinstance(PLUGIN_DESCRIPTION, str)
         assert isinstance(PLUGIN_VERSION, str)
-        assert len(PLUGIN_TOOLS) == 8
+        assert len(PLUGIN_TOOLS) == 12
         assert all(callable(t) for t in PLUGIN_TOOLS)