Alfredo orozco df9e8ff394
Feature(escpos) Add buzzer function (#535)
* Add buzzer function
* Add `buzzer(time, duration)` function to control the buzzer on supported
   printers.
* Add unit tests for buzzer function.
* Update test_function_buzzer.py to pass black
* Run black in tests files
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Co-authored-by: Patrick Kanzler <dev@pkanzler.de>
2023-07-27 19:10:19 +02:00
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