Add a github/dependabot.yml file

This should activate dependabot alerts for this repository.

Implements #1692

Author: setton

.github/dependabot.yml

@@ -0,0 +1,9 @@
+# See the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "npm" # See documentation for possible values
+    directory: "integration/vscode/ada/" # Location of package manifests
+    schedule:
+      interval: "weekly"