Usually glass breaks at a fixed speed, no matter what tool you use.
This changes that, so glass can now be broken faster with a pickaxe, as if it were any other block.

List of what the game considers "glass" blocks:
Compatible with:
(in all honesty it works in a kinda-hacky way but it should be fine ;) )
(ignore the "Release" and "Beta" markers on the downloads; they're all the same version)
(if you're looking for a vanilla-compatible datapack equivalent, check out Pickaxe Effective Glass! note, however, that it only works with vanilla glass, due to the limits of the vanilla datapack system.)