Implementing Playsound command/module

[yuuwe-n]

Sorry, if the code is incomplete with placeholders, I created a fork to implement the command Playsound to see if the format was correct. I need to integrate the feather sounds with this module. This is my first time with contributing with open source, or any code base so I am very sorry if I done things wrong.

Also with my pull request, I am pretty sure all these Options could be replaced, but I don't know how to.

Done so far

• Pretty much sourced command from gamepedia to create struct and impl
• Added placeholders for Source

To Do

• integrate position with sound placement
• integrate volume (placeholded with f32 values)
• integrate pitch (placeholded with f32 values)
• integrate min_volume (placeholded with f32 values)
• integrate with actually playing sound
• acquire lists of sounds and music (i think we have to make our own sounds and music)