feat: ✨ add mypy to VS Code settings and extensions (#93)

# Description

Matching what has been changed in Sprout.

No review needed.

Author: lwjohnst86

.vscode/extensions.json

@@ -8,6 +8,7 @@
     "GitHub.vscode-pull-request-github",
     "ms-python.python",
     "ms-python.vscode-pylance",
+    "ms-python.mypy-type-checker",
     "njpwerner.autodocstring",
     "quarto.quarto",
     "ms-toolsai.jupyter",

.vscode/settings.json

@@ -34,4 +34,5 @@
   "files.insertFinalNewline": true,
   "python.testing.pytestEnabled": true,
   "python.testing.pytestPath": "${workspaceFolder}/.venv/bin/pytest",
+  "mypy.runUsingActiveInterpreter": true,
 }