feat: convert audio from an extension to another (e.g. mp3 to wav)

[jrafaaael]

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Pull Request Template

script name - audio-converter.py

What have you Changed I added the proposed script. This script is a CLI tool to convert an audio file from one extension to another (e.g. mp3 to wav)

Issue no.(must) -

fixes #536

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• [x] This issue was assigned to me.
• [x] One Change in one Pull Request
• [x] My file is in the proper folder
• [x] I am following clean code and Documentation and my code is well-linted with flake8.
• [x] I have added README.md and requirements.txt with my script

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acknowledgment

• [x] I have tested the script and distributed it under an MIT license.

[jrafaaael]

fixes #536