* Doom, Doom 2, Heretic: customizable ammo capacity
* Do not progression balance capacity up items
* Prog fill still doesn't agree, just go with our original idea
* Clean up the new options a bit
- Gave all options a consistent and easily readable naming scheme
(`max_ammo_<type>` and `added_ammo_<type>`)
- Don't show the new options in the spoiler log,
as they do not affect logic
- Fix the Doom games' Split Backpack option accidentally referring to
Heretic's Bag of Holding
The logging change across all three games is incidental, as at some
point I did run into that condition by happenstance and it turns out
that it throws an exception due to bad formatting if it's reached
* Do the visibility change for Heretic as well
* Update required client version
* Remove spoiler log restriction on options
* Remove Visibility import now made redundant
