chore: enable deno and deno lint in container

.devcontainer/devcontainer.json

@@ -4,7 +4,15 @@
 
     // Set *default* container specific settings.json values on container create.
     "settings": { 
-        "terminal.integrated.shell.linux": "/bin/bash"
+        "terminal.integrated.shell.linux": "/bin/bash",
+        "deno.enable": true,
+        "deno.lint": true,
+        "editor.defaultFormatter": "denoland.vscode-deno",
+        "editor.formatOnSave": true,
+        "editor.codeActionsOnSave": {
+            "source.organizeImports": true,
+            "source.fixAll": true
+        }
     },
 
     // Add the IDs of extensions you want installed when the container is created.
@@ -20,4 +28,4 @@
 
     // Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
     // "remoteUser": "vscode"
-}
+}