* SPB forcing has been generalized as a 'forceme' variable that any item can set to force itself (based on priority)
* SPB odds in general have been generalized; the KRF_RUNNERAUGMENT flag lets any item use SPB odds rules, minus the forcing
* Items can modify or override their odds with unique odds functions
* Odds tables are further indexed by 'item format', an evolution of the kart item type (Legacy, Alternate) system
* Distribution debugger has been updated in respect to the fact that any item can force themselves. Red 'FRC' text, including the force priority, appears on any item forcing itself
Too much shit to explain, read the diff (you should anyway!)
Very sloppy, expect lots of fixes
TODO: SOC it all, separate "active odds" table, how to handle alt items
Struct implementation of an item's odds and relevant functions:
* Stored in an unordered map for non-static item allocation; you can theoretically have millions of items in the game now
* All item odds are dynamic C++ vectors that are loaded in a per-gametype basis.
* Extremely boilerplate; any and every system in place can be used by any and every item
* Changed every instance of K_AltShrinkActive to its K_IsKartItemAlternate equivalent
* Same as above for Invincibility; some functions might still rely on K_GetKartInvinType though
* (Balance change) Alt. Invin. needs a slightly farther distance to start appearing, hopefully means less 5sec dud invinces
* Brought back cv_landmine to prevent SIGSEGVs in the item toggles menu
* Introduce NUMBASEKARTRESULTS since all KAITEM_X items are overrides assigned via K_GetAlternateVersion
* Player gains a big speed boost
* Anything that would squish a shrunken player in Legacy (save for Grow players) flips them over here
* Most items rolled are doubled: singles become doubles, doubles become quadruples, and you can roll 6 bananas
* Certain multi items (3sneaker, 3orbi and 4orbi, 2jawz, decanana, ballhog) do NOT get doubled for balance reasons
* Shrunken players get rival bot odds, making their rolls more aggressive and frantic
