GUACAMOLE-773: Add license information for new JavaScript dependencies pulled in by Webpack.

doc/licenses/inherits-2.0.3/LICENSE

@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.

doc/licenses/inherits-2.0.3/README

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+inherits (https://github.com/isaacs/inherits)
+---------------------------------------------
+
+    Version: 2.0.3
+    From: 'Isaac Z. Schlueter' (https://github.com/isaacs)
+    License(s):
+        ISC (bundled/inherits-2.0.3/LICENSE)
+

doc/licenses/inherits-2.0.3/dep-coordinates.txt

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+inherits:2.0.3