Add a hitTransparentBlocks option to the projectile mechanic (and other mechanics)

Summary

Currently, you can't hit a select few blocks based on the opacity of a block; this option would allow for mechanics to hit those blocks.

A link to all the blocks this would effect - https://cdn.discordapp.com/attachments/738651619071230033/791866269216800768/unknown.png

Usage

It would be an attribute for, at least, the projectile mechanic.

Value

Gives more options for blocks to be hit by mechanics.

Priority

Low, I don't think this would be massively used, but it would be very nice to have.