Pitch and volume multipliers for block breaking, placing, step and falling sounds are hardcoded and not found in sounds.json

sounds.json is supposed to be the central location for controlling sound pitch and volume values. However, despite this, there are several leftover cases from prior to its addition, with the pitch and volume of general block sounds having hardcoded multipliers which cannot be changed by sounds.json. These multipliers should be removed from the game's code and transferred to sounds.json, being multiplied by any prior values present in the file where neccessary.

The values are as follows:

Placement and broken: pitch 0.8
Breaking: pitch 0.5, volume 0.25
Footsteps: volume 0.15
Falling: pitch 0.75, volume 0.5