Added mypy and ty to CI

Author: ankane

.github/workflows/build.yml

@@ -27,3 +27,7 @@ jobs:
 
       - run: pip install --group dev-optional
       - run: pytest
+
+      - run: pip install --group typing
+      - run: mypy
+      - run: ty check

pyproject.toml

@@ -35,6 +35,11 @@ dev-optional = [
     "numpy",
     "scipy"
 ]
+typing = [
+    "mypy",
+    "ty",
+    {include-group = "dev-optional"}
+]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"