settings file

I don't like checking in the settings.json file in .vscode, but these settings are necessary to run the unittests in VS Code, it took me forever to figure them out, and I didn't want others to be blocked.

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "python.terminal.activateEnvInCurrentTerminal": true,
+  "python.envFile": "${workspaceFolder}/.env",
+  "python.testing.unittestEnabled": true
+}