Make MacOS TTS voices configurable.

[dayofthedave]

Background

As a MacOS user, I want to be able to choose my preferred voices easily. Making the voices configurable in .env makes it easy to choose voices without have to edit code.

Changes

Added support for 3 new config variables, one for each voice option. If no voice is specified in .env, Auto-GPT will default to Allison, Ava and Samantha, which are all voices that are commonly preinstalled with MacOS, as far as I know. If the default voice specified by Auto-GPT is not installed, MacOS should default to whatever voice is set in System Settings.

Documentation

The new code is easy to understand without documentation.

Test Plan

I ran through several different scenarios with speech enabled. Note that I did not test every possible voice.

PR Quality Checklist

• My pull request is atomic and focuses on a single change.
• I have thoroughly tested my changes with multiple different prompts.
• I have considered potential risks and mitigations for my changes.
• I have documented my changes clearly and comprehensively.
• I have not snuck in any "extra" small tweaks changes

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[p-i-]

This is a mass message from the AutoGPT core team.
Our apologies for the ongoing delay in processing PRs.
This is because we are re-architecting the AutoGPT core!

For more details (and for infor on joining our Discord), please refer to:
https://github.com/Significant-Gravitas/Auto-GPT/wiki/Architecting

[gravelBridge]

You should also modify the .env.template file to accommodate these new variables.

[Auto-GPT-Bot]

You changed AutoGPT's behaviour. The cassettes have been updated and will be merged to the submodule when this Pull Request gets merged.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.11 🎉

Comparison is base (60ac0c4) 69.58% compared to head (9dadb04) 69.69%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3566      +/-   ##
==========================================
+ Coverage   69.58%   69.69%   +0.11%     
==========================================
  Files          72       72              
  Lines        3551     3554       +3     
  Branches      569      569              
==========================================
+ Hits         2471     2477       +6     
+ Misses        889      885       -4     
- Partials      191      192       +1     

Impacted Files	Coverage Δ
autogpt/speech/macos_tts.py	33.33% <0.00%> (-8.34%)	⬇️

... and 1 file with indirect coverage changes

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[Auto-GPT-Bot]

You changed AutoGPT's behaviour. The cassettes have been updated and will be merged to the submodule when this Pull Request gets merged.