osu! performance points balancing pass

[stanriders]

Changes included here:

1. Slightly raw aim buff (which does not include slider aim or high bpm aim)
2. Add OD multipliers to ok/meh miss additions for relax (https://www.desmos.com/calculator/bc9eybdthb), remove ar bonus and reduce flashlight pp for relax (replaces #16708)
3. Reduce speed 50s nerf (would love to remove it completely eventually, but for now just https://www.desmos.com/calculator/axwv6i9hrs)
4. Reduce low AR bonus because some maps were getting more pp with easy mode than without it (i.e https://osu.ppy.sh/beatmapsets/149471 +HTEZ being 391pp vs +HT being 379pp)

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SR/PP changes sheet: https://docs.google.com/spreadsheets/d/1M26JmN76yLo9H8MxDrlNz0Aeh2p4BhaT6Mnt4gux7IU/edit

As of https://github.com/ppy/osu/pull/19001/commits/760742e358a3a12d995bdf544baf87871a178df3

[smoogipoo]

SR/PP sheet added to description. Awaiting 2 approvals before merge.

[apollo-dw]

As per frost's comment in pp-dev, the cube root term in the total SR formula needs to be updated to reflect any changes to the global pp multiplier. Making the multiplier static and using it instead of updating it everytime (and potentially forgetting to) sounds like the right course of action to me.

https://github.com/ppy/osu/blob/633f6fe62082bfdea5e5be38434e233b6a9d6777/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs#L67