In MDriven Turnkey for AngularJS you can add a file AppWideAngularScriptIncludes.html in EXT_Scripts.

The contents will be included in your app before Angular compile.

Typical content is:

<script src="/EXT_Scripts/BoardComponentScriptsThatUseDirectivesAndSuch.js"></script>

<script src="/EXT_Scripts/GanttComponentScriptsThatUseDirectivesAndSuch.js"></script>

<script src="/EXT_Scripts/<YourScript>.js"></script>