Add useful VSCode launch configuration

Author: AlexanderWells-diamond

.vscode/launch.json

@@ -4,13 +4,22 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
+        {
+            "name": "Python: Current File",
+            "type": "python",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal"
+        },
         {
             "name": "Debug Unit Test",
             "type": "python",
             "request": "launch",
             "justMyCode": false,
             "program": "${file}",
-            "purpose": ["debug-test"],
+            "purpose": [
+                "debug-test"
+            ],
             "console": "integratedTerminal",
             "env": {
                 // The default config in setup.cfg's "[tool:pytest]" adds coverage.
@@ -20,4 +29,4 @@
             },
         }
     ]
-}
+}