refactor: avoid relative imports (for pyinstaller)

Author: azmeuk

scim2_cli/__init__.py

@@ -23,8 +23,7 @@
 from scim2_cli.test import test_cli
 from scim2_cli.utils import DOC_URL
 from scim2_cli.utils import HeaderType
-
-from .utils import split_headers
+from scim2_cli.utils import split_headers
 
 
 # monkeypatching pydanclick until this patch is released