VSCode: add current file launch option.

Author: HexDecimal

.vscode/launch.json

@@ -4,6 +4,14 @@
     // 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",
+            "preLaunchTask": "develop python-tcod",
+        },
         {
             // Run the Python samples.
             // tcod will be built and installed in editalbe mode.