[mypy] #163: Introduce mypy pre-commit hook

Install types-tabulate subs:
  - TODO: to be removed once tabulate has been dropped
ignore_missing_imports: Ignore dependencies such as DuniterPy

.pre-commit-config.yaml

@@ -19,6 +19,13 @@ repos:
     hooks:
     - id: isort
       args: ["--profile", "black"]
+-   repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v0.960
+    hooks:
+    - id: mypy
+      args:
+        - "--install-types"
+        - "--non-interactive"
 -   repo: https://github.com/asottile/pyupgrade
     rev: v2.32.1
     hooks:

pyproject.toml

@@ -44,3 +44,6 @@ classifiers = [
 [tool.isort]
 profile = "black"
 src_paths = ["silkaj", "tests"]
+
+[tool.mypy]
+ignore_missing_imports = true