Breaking release, at least for PulseAudio setups.

:warning: I took down the windows build due to https://github.com/werman/noise-suppression-for-voice/issues/129 and https://github.com/werman/noise-suppression-for-voice/issues/127

Changes:

• Now we are using JUCE framework, which brings the following benefits:
  • Support of all popular plugin formats, now we also support VST3, AU, and AUv3
  • Easy to create cross-platform GUI
  • 
  • Automatic generation of plugin metadata
  • Reduced code duplication
• macOS builds
• New parameters: VAD Grace Period (ms), Retroactive VAD Grace (ms)
• Better compatibility with non-480 block sizes, which allows plugin to work with Audacity and in many other cases
• FST headers are used instead of VST2 ones in order to work around VST2 headers license
• CI builds artifacts for all operation systems
• Testing in CI
• Update instructions for PipeWire