Adding precommit hook for mypy

.pre-commit-config.yaml

@@ -60,6 +60,18 @@ repos:
       - id: ruff-format
         name: Format code using ruff
         types_or: [ python, pyi, jupyter ]
+
+    # Run mypy type checking across all source files
+  - repo: local
+    hooks:
+      - id: mypy-check
+        name: Type check
+        description: Run mypy static type checking.
+        entry: mypy .
+        language: system
+        pass_filenames: false
+        always_run: true
+
     # Make sure Sphinx can build the documentation while explicitly omitting 
     # notebooks from the docs, so users don't have to wait through the execution 
     # of each notebook or each commit. By default, these will be checked in the