feat(balance): adjustments to coca products

[chaosvolt]

Purpose of change

@Lamandus noted that the addiction stats and other behavior of coca leaves seem a bit potent for chewing on individual leaves. Along the way I spotted a few other general oddities as well.

Describe the solution

1. Reduced the stim value of coca leaves from 7 to 5, and addiction_potential from 6 to 3. This makes it overall a good bit more efficient in terms of stimulant gained per point of addiction as opposed to only barely giving more stim than addiction.
2. Bumped the addictiveness of coca tea up from 5 to 6, leaving its stim value unchanged. This fits with the idea of leaching more cocaine alkaloids than you'd get by chewing them, in exchange for a reduction in how efficient it is at simulating you relative to addiction gain.
3. Fixed the fatigue_mod values of coca leaves and tea, and gave some basic values to cocaine as well as crack. The main thing was a massive negative number instead of a positive amount, meaning coca leaves and tea would actually make you more tired (but also stimulated and thus not able to sleep). Made the value for coca leaves 2 points higher than tea leaves and the value for coca tea 1 point higher than regular tea, while using values for cocaine and crack of 15 and 20 respectively.

Describe alternatives you've considered

Honestly the ratios of stim to addiction gain for cocaine and crack could use some sanity-checking relative to each other, as it stands you waste a lot of potential stimulant value making cocaine when you could be chewing the leaves en mass instead. Then again cocaine is just plain wack as it's actually WORSE than crack in terms of how efficient it is at getting your stim value up (20 stimulants for 50 addiction points, compare crack doubling the stim value but only having 80 addiction).

Likewise, making the drug recipes more granular would be a good idea in the future. If we do we could also afford to nerf the hell out of the yield of leaves from coca plants.

Testing

Checked affected files for syntax and lint errors.

Additional context

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