pyproject.toml: add new poe target "types-extra"

As kindly suggested by the existing "types" target:

$ uv run poe types

Poe => mypy --package west

src/west/app/project.py:1364: note: By default the bodies of untyped
functions are not checked, consider using --check-untyped-defs
[annotation-unchecked]

Do not include in the "all" group because it's not passing.

Signed-off-by: Marc Herbert <[email protected]>

Author: marc-hb

pyproject.toml

@@ -118,6 +118,9 @@ env = {PYTHONIOENCODING = "utf-8"}
 lint = "ruff check ."
 format = "ruff format"
 types = "mypy --package west"
+# work in progress
+types-extra = "mypy --package west --check-untyped-defs"
+
 all = ["test", "lint", "format", "types"]
 
 # Github specific tasks