Script to control PulseAudio sound server.

Implemented sound control commands:

• Get Input Status
  This shows whether the mic is on or off.
• Toggle Input Status
  This toggles the state of the mic.
• Get Output Status
  This shows whether the output on the speaker or headphone.
• Toggle Output Status
  This toggles the output between speaker and headphone.
• Get Volume Level
  This shows the volume level.
• Set Volume Level
  This sets the volume level.
• Get Sound Status
  This shows the state of the input and output also the volume level in JSON format.
• Set Sound Default
  This sets the default volume of both speaker and headphone.

Script to control PulseAudio sound server.
Usage: sound-ctl.sh OPTION [EXTRA_ARGS]

OPTION:
  gi  : get input status
  i   : toggle input status
  go  : get output status
  o   : toggle output status
  gv  : get volume level
  sv  : set volume level
  s   : get sound status
  d   : set sound default

EXTRA_ARGS is needed for OPTION:
  sv  : volume level between 0-100

Run setup.sh to setup the sound control script.
This will set the config required to run the script:

• output sink
• input source
• speaker port
• headphone port

There is also a test script (test.sh) for the sound control script for:

• testing output of gi, go, and gv
• testing exit code for every commands.

Tested with Linux Mint 20.2 and PulseAudio 13.99.1

Having both speakers and headphones plugged in and switching in software on-the-fly