Added kelp, beacon beam, dark prismarine and more

In the tenth update of SapixCraft for 1.13 I added the kelp item, beacon beam, compataor, dark prismarine, bone block and I changed some existing textures like the coal block and restone block as well an updated chrismas chest!

Added things:

kelp item
beacon beam
comparator & comparator on
dark prismarine
bone block & bone block top

Changed things:

Mojang start image
christmas chest
christmas double chest
coal block & coal block top
redstone block & redstone block top