Alpaca core whisper.cpp plugin

This is a wrapper of whisper.cpp implemented as per the discussion Integration of llama.cpp and whisper.cpp:

• Use the whisper.cpp C interface
• Reimplement the common library

Build

Important

When cloning this repo, don't forget to fetch the submodules.

• Either: $ git clone https://github.com/alpaca-core/ac-local.git --recurse-submodules
• Or:
  • $ git clone https://github.com/alpaca-core/ac-local.git
  • $ cd ac-local
  • $ git submodule update --init --recursive