Ajout configuration débuggage pas-à-pas pour VSCode

Author: thbar

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "mix_task",
+            "name": "mix phx.server",
+            "request": "launch",
+            "projectDir": "${workspaceRoot}",
+            "task": "phx.server"
+        }
+    ]
+}