feat(widget): automate adding copyright header

widget/src/vite-env.d.ts

@@ -5,3 +5,6 @@
  * 1. The name "Hexabot" is a trademark of Hexastack. You may not use this name in derivative works without express written permission.
  * 2. All derivative works must include clear attribution to the original creator and software, Hexastack and Hexabot, in a prominent location (e.g., in the software's "About" section, documentation, and README file).
  */
+
+//added to bypass ESLint issue happing when we add an copyright header in a empty file
+type empty = never;