add vscode config for auto running python tests

.vscode/settings.json

@@ -13,5 +13,10 @@
         "Vids"
     ],
     "python.pythonPath": "/usr/bin/python3",
-    "flake8.enabled" : false // we are using trunk for formatting/linting rules, don't yell at us about line length
+    "flake8.enabled": false,
+    "python.testing.pytestArgs": [
+        "meshtastic/tests"
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true // we are using trunk for formatting/linting rules, don't yell at us about line length
 }