feat: add vscode extensions for devcontainer

Signed-off-by: warjiang <[email protected]>

.devcontainer/devcontainer.json

@@ -2,5 +2,13 @@
 // README at: https://github.com/devcontainers/templates/tree/main/src/alpine
 {
     // ref: https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/adding-a-dev-container-configuration/introduction-to-dev-containers#dockerfile
-    "image": "docker.io/kcllang/kcl-builder:latest"
+    "image": "docker.io/kcllang/kcl-builder:latest",
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "rust-lang.rust-analyzer",
+                "ms-vscode.makefile-tools"
+            ]
+        }
+    }
 }