added gdb to trask

exercises/05/.vscode/launch.json

@@ -1,6 +1,30 @@
 {
     "version": "0.2.0",
     "configurations": [
+      {
+        "name": "(gdb) Launch task",
+        "type": "cppdbg",
+        "request": "launch",
+        "program": "${workspaceRoot}/tasks/10_green_bottles",
+        "args": [],
+        "stopAtEntry": false,
+        "cwd": "${fileDirname}",
+        "environment": [],
+        "externalConsole": false,
+        "MIMode": "gdb",
+        "setupCommands": [
+            {
+                "description": "Enable pretty-printing for gdb",
+                "text": "-enable-pretty-printing",
+                "ignoreFailures": true
+            },
+            {
+                "description":  "Set Disassembly Flavor to Intel",
+                "text": "-gdb-set disassembly-flavor intel",
+                "ignoreFailures": true
+            }
+        ]
+      },
       {
         // for Linux
         "name": "(gdb) Launch",