Colored squares and chess piece characters

[dbqpdb]

Users would like a board that looks like a chess-board. Implement a board with checkered squares, and pieces that look like chess pieces. This may require a combination of sys, color, and piece color swapping.

[dbqpdb]

Piece glyphs implemented. Need to work out the board.

[dbqpdb]

Testing has identified curses as the best option for board display. It even works in Windows cottage cheese consoles, and in the VSC console.