Release Version 1.2.1

This time a bit less changes since it's more a fix and imrovement uptade. Probably getting near to the completion of the pack but I still will uptade it for new game uptades!

Changes

• Added Support for 1.21
• Redstone Torch Animation Change (To make the animation a bit more clear.)
• Gamemode Switcher (Background transparency lowered and deleted some pixels on the edges.)
• Glow Item Frame Animation Change (Animation got slowed down and got one frame deleted to make the animation visually more appealing.)
• Decorated Pot (Texture now includes golden stripes.)
• Furness Burn Progress Fix (The burn progress bar of the furnace got placed correctly.)
• Main Menu Splashes (The "Be ready for 1.21!" splash got replaced with "Tricky Trials!".)