Forests and Fireflies

This mod adds 2 things: a new birch forrest biome and fireflies, these features where planned for 1.19, but where canceled, I decided to add them. The new birch forrest has logs with moss on top, bright green grass, and tons of plants to make it feel alive. The fireflies spawn in the swamp at night, you can transport them with a bottle. Right click them to capture them in a bottle, and right click again to let them free. The new birch forrest is actually a new biome called the modified birch forrest, because i couldn't change the existing birch forrest using mcreator.