filter unfinished examples and add timer to ensure upper limit of each example

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    // 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": [
+        {
+            "name": "Python Debugger: Current File with Arguments",
+            "type": "debugpy",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal",
+            "args": [
+                "--path_to_vm", "/Users/lxc/Virtual Machines.localized/DesktopEnv-Ubuntu 64-bit Arm.vmwarevm/DesktopEnv-Ubuntu 64-bit Arm.vmx",
+                "--example_time_limit", "60"
+            ]
+        }
+    ]
+}