Add a mypy pre-commit step

.pre-commit-config.yaml

@@ -47,3 +47,10 @@ repos:
               aesara/tensor/linalg\.py
           )$
         args: ['--in-place', '--remove-all-unused-imports', '--remove-unused-variable']
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v0.931
+    hooks:
+      - id: mypy
+        additional_dependencies:
+        - types-filelock
+        - types-setuptools