Cleanup projectile events (#2426)
* Initial work on `ProjectileHitScriptEvent`
* Deprecate `ProjectileCollideScriptEvent`
* Finish meta docs
* Remove old versions
* Only deprecated on 1.19+
* Cleanup `couldMatch`, check for edge cases
* Add version note to deprecation notice
* Cleanup deprecation messages
* Fixes from review
* Add note to `collides` event deprecation
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commit: 7841434)
