add support ota

hc

2023-02-18 a08c8b75ee83d7f62c9aefc23bfb42082aa4076c

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# Locally computed:
sha256  bf9a17673adffcc28ff7ea18764f06136547e97bbd9edf2ec612f09b207f0659  espeak-1.48.04-source.zip