Add type checking to test workflow

.github/workflows/docs.yml

@@ -14,4 +14,4 @@ jobs:
         with:
           python-version: "3.8"
       - run: pip install -r requirements-docs.txt
-      - run: mkdocs gh-deploy --force
+      - run: mkdocs gh-deploy --force

.github/workflows/test.yml

@@ -17,8 +17,10 @@ jobs:
           python-version: "3.8"
       - name: Install Dependencies
         run: pip install -r requirements-tests.txt
-      - name: Lint
+      - name: Ruff
         run: ruff check scrapy_webarchive tests
+      - name: Mypy
+        run: mypy scrapy_webarchive
 
   test:
     runs-on: ubuntu-latest

pyproject.toml

@@ -72,3 +72,6 @@ quote-style = "double"
 indent-style = "space"
 skip-magic-trailing-comma = false
 line-ending = "auto"
+
+[tool.mypy]
+strict = false