Add sprintf.js v1.0.2.

This script provides sprintf() for JavaScript. It can be used for
example for translating strings used in JavaScript with variables.

It is licensed under BSD-3-Clause and can be found on GitHub:
https://github.com/alexei/sprintf.js

library/sprintf.js/dist/angular-sprintf.min.map

@@ -0,0 +1 @@
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