Infinities...

• removes the need to have arrows in your inventory when using Infinity enchanted items.
• allows you to combine Infinity and Mending.
• allows you to enchant crossbows with Infinity.
• is optional on clients when installed on a server.

It's basically an updated and fixed clone of Infinity Fix.

Starting with Minecraft 1.21 there is no more configuration file since enchantments are now defined in data packs. To bring the enchantment restrictions back, copy the vanilla Infinity json file to a new data pack.