Created a More Readable PSQ file

Should not result in a functional change, but instead makes the PSQ page easier to work with.

If there is a hidden functional change, it would be minor, but of course the improvement in look is less important than even 1 ELO point.

Changes:
> Removed a constant non-zero PSQ endgame value and moved this change to the default piece value

> Zero-indexed the king's PSQ values