Add launch configuration for debugging FoodsharingSiegen.Server

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug FoodsharingSiegen.Server",
+      "type": "dotnet",
+      "request": "launch",
+      "projectPath": "${workspaceFolder}/FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj",
+      "env": {
+        "DOTNET_ROLL_FORWARD": "Major"
+      },
+      "launchBrowser": true,
+      "serverReadyAction": {
+        "action": "openExternally",
+        "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
+      }
+    }
+  ]
+}