Added standalone foreground tiles

Oi!

We’re adding 4 new standalone foreground tiles for 16p and 32p! These tiles are designed to seamlessly integrate with your surroundings. If you’d like to fill the surrounding areas with a solid, matching color, here’s what to use:

• 4_Foreground_1_Tile: For the default version of the tileset (referred to as 1).
• 4_Foreground_1B_Tile: For the tileset version referred to as B or 1B.
• 4_Foreground_shadow_Tile: For the Minetileset1_Foreground_shadow version.
• 4_Foreground_shadowless_Tile: For the Minetileset1_Foreground_shadowless version.

You might wonder: Why 4? They look the same! Well, each tile has a slightly different shade of black (trust us!). Use whichever fits your needs best - it’s entirely up to you!