Set 'autoIndent' to 'advanced' to allow onEnterRules

This allows per-language onEnterRules to be applied when pressing
ENTER. In particular it allows splitting comments on ENTER for
Ada.

(no-issue-check)

Author: AnthonyLeonardoGracio

.vscode/settings.json.tmpl

@@ -5,7 +5,7 @@
       "*.json.tmpl": "jsonc"
    },
    "[ada]": {
-      "editor.autoIndent": "none",
+      "editor.autoIndent": "advanced",
       "editor.formatOnType": true,
       "showNotificationsOnErrors": true
    },