* rename `getShinyMultiplier`
* simplify methods to use first active event instead of sometimes using all active events
* change remaining methods to use first event
* use `ModifierTypeKeys` instead of `string` for wave rewards
* rename `shinyMultiplier` to `shinyEncounterMultiplier` and add `shinyCatchMultiplier`
* update comments
* add comment
* Fix capitalization of variable, remove comment
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Co-authored-by: NightKev <34855794+DayKev@users.noreply.github.com>