Add Licensed To Help Verify Prod Licenses (#326)

* Add Licensed file and workflow

* manual updates of dependencies

* Delete licenses.txt

* Ignore Generated Files in Git PR's

.licenses/npm/underscore.dep.yml

@@ -0,0 +1,34 @@
+---
+name: underscore
+version: 1.8.3
+type: npm
+summary: JavaScript's functional programming helper library.
+homepage: http://underscorejs.org
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    Copyright (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative
+    Reporters & Editors
+
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use,
+    copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following
+    conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+    OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+    OTHER DEALINGS IN THE SOFTWARE.
+notices: []