Add CMUdict license and README under audio/whisper/cmudict

audio/whisper/cmudict/LICENSE

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+Copyright (C) 1993-2015 Carnegie Mellon University. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   The contents of this file are deemed to be source code.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+
+This work was supported in part by funding from the Defense Advanced
+Research Projects Agency, the Office of Naval Research and the National
+Science Foundation of the United States of America, and by member
+companies of the Carnegie Mellon Sphinx Speech Consortium. We acknowledge
+the contributions of many volunteers to the expansion and improvement of
+this dictionary.
+
+THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
+ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
+NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

audio/whisper/cmudict/README.md

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+# CMU Pronouncing Dictionary
+
+Unmodified `cmudict.dict` and `LICENSE` from
+https://github.com/cmusphinx/cmudict/tree/74790861f652b15e4ac49015a90074ad62a27690.
+
+Copyright Carnegie Mellon University; redistribution terms are in `LICENSE`.
+Bundled for offline English lexical syllable counts, not measured sung pronunciation.
+No Python wrapper, speech engine, or runtime download is required.
+
+SHA-256 of upstream files:
+
+| File | SHA-256 |
+| --- | --- |
+| cmudict.dict | 81917843c7f44ce2b094ac63873c2c7a4cf802040792c455ba3ca406891c3d22 |
+| LICENSE | bd4ce8e44170a5f9f481310ca85c51de3c4f851a65e679b40e603b143bd3542a |