style: Config ruff to check imports by default except in init files

ruff.toml

@@ -40,6 +40,7 @@ target-version = "py310"
 # Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
 # McCabe complexity (`C901`) by default.
 select = ["E4", "E7", "E9", "F", "W"]
+extend-select = ["I"]
 ignore = ["E731"]
 
 # Allow fix for all enabled rules (when `--fix`) is provided.
@@ -77,5 +78,5 @@ docstring-code-format = true
 docstring-code-line-length = "dynamic"
 
 [lint.per-file-ignores]
-"__init__.py" = ["E402", "F401", "F403"]
+"__init__.py" = ["E402", "F401", "F403", "I001"]
 "test/**" = ["F841"]