adding basic debug lldb config for vscode codelldb extension

Author: squillace

.vscode/launch.json

@@ -0,0 +1,23 @@
+{
+  // 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": "lldb",
+      "request": "launch",
+      "name": "LLDB Debug",
+      "program": "wasmtime",
+      "args": [
+        "serve",
+        "-D",
+        "debug-info=y",
+        "--dir",
+        ".",
+        "${workspaceFolder}/target/wasm32-wasip1/debug/sample_wasi_http_rust.wasm",
+      ],
+      "cwd": "${workspaceFolder}"
+    }
+  ]
+}