Add data-value (optional) to StructureOverlay

[DragonDev1906]

• Add optional data value
• Made the Alpha value optional and default to 255

This allows searching for wool colors in the StructureOverlay (and other things) as requested in #1767

Example Config:

StructureOverlay(structures=list([
    (((0, 0, 0, 66), (0, -1, 0, 35, wool_data)), color)
    for wool_data, color in enumerate([
        (255,255,255),      # White
        (255,170,0),        # Orange
        (255,0,255),        # Magenta
        (128,128,255),      # Light Blue
        (255,255,0),        # Yellow
        (192,255,0),        # Lime
        (255,100,162),      # Pink
        (90,90,90),         # Gray
        (160,160,160),      # Light Gray
        (44,171,255),       # Cyan
        (0,0,255),          # Blue
        (255,0,255),        # Purple
        (0,255,0),          # Green
        (160,70,0),         # Brown
        (255,0,0),          # Red
        (0,0,0),            # Black
    ])
]))