This is a straight port of the mod "Infinitory" for newer versions of Minecraft. The mod's name (probably) stands for"Infinite Inventory" and is exactly what it does: remove the stack and the slot limit of your inventory. It also provides sorting by item ID, name or quantity.
This mod is currently available for Minecraft version 1.19.2 and newer. 1.18 ports on request. Original mod for 1.17.1.