[FEATURE] Improve readability of killer info and damage report

[Agiel]

Description

The current popup is difficult to parse and can be distracting. It would be better to separate the killer info and the damage report so there's less information overload.

Proposed Solution

• Rework the popup to behave like the classic plugin. I.e. only show information about who killed you, and have the popup go away automatically after a fixed amount of time.
• Add damage report to the scoreboard. When dead, show the report for the current round. When alive, show report for the previous round.
• Tweak the wording of the damage report (on scoreboard and console) to "dealt" -> "dealt to", "taken" -> "taken from" so there's no ambiguity about who did what to whom.

Alternatives Considered

No response

Additional Context

No response