Begin task refactor

Store state using interrupt stack instead. Looks like `int 0x80` doesn't
work though, which is odd.
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..3ca0ef0
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,17 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "qemu:build",
+            "type": "shell",
+            "command": "make -C src/kernel/ debug-wait",
+            "problemMatcher": [],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        }
+    ],
+}
\ No newline at end of file