Blood: Add 'pitchfork only' autoaim option

[tmyqlfpir]

Smaller enemies such as the hands, rats and fish appear to be designed in mind for autoaim as it's incredibly difficult to hit them precisely when autoaim is turned off.

This PR adds a new autoaim setting to allow players to always have autoaim set for the pitchfork weapon, so players who prefer not to use autoaim can have it only applied for the pitchfork.

[Hendricks266]

My intuition would be, if I had autoaim disabled and I clearly missed but it hit anyway, that would not feel right. That said, I see that Blood enables autoaim unconditionally for the Voodoo Doll and the Life Leech.

In EDuke32, we make it so that if the crosshair is actually over the target when hitscan weapons are fired, they always hit the target regardless of random weapon spread, even if autoaim is disabled. This is because vanilla Duke 3D unconditionally uses autoaim, and the game was balanced in that way. In contrast, vanilla Blood has a setting to disable autoaim. This may be the true solution to what this PR intends to fix, and possibly even the forced autoaim in the original game.

[tmyqlfpir]

I believe the reason why Voodoo Doll and Life Leech both force autoaim is that the weapon is designed around that.

The pitchfork isn't at all, but I feel it should be given that it is used at a point blank range and should be forgiving rather than relying precise aiming, unlike using an hitscan weapon at a greater distance. It is also disabled for vanilla mode for the sake of accuracy.

[ElJulo25]

I prefer no auto aim imho