[FEATURE] Improve killfeed presentation

[Rainyan]

Description

We currently have a bit of an information overload in the killfeed. Especially with rank-ups, it can get really busy and difficult to read with a bunch of items visible at the same time.

Proposed Solution

As a player, I want to be able to quickly identify relevant killfeed info (who killed who) without being overloaded with less important stuff (rankups etc) in the heat of the moment. Since a rankup will not be very actionable information until the next round starts, at least for the standard CTG mode.

I propose we merge items that are related, for example a kill and the rank-up resulting from that kill should be presented in the same line, instead of creating a separate killfeed item for the kill and for the rankup (image borrowed from Discord bikeshed):

I also think we could simplify the ghost capture, such that it simply displayed the team whose alive players received the rank-up, rather than enumerating every single team member (worst case MaxPlayers/2 rank-up items in the killfeed simultaneously).

Alternatives Considered

An alternative would be cutting out all information except the basic kill info, to make things extremely streamlined. But I suspect there is some value in presenting this extra info, for those who care to see it.

Additional Context

This has been a Discord hot (lukewarm?) potato for some time. Adding a ticket so it doesn't get forgotten about.

[Agiel]

My two cents is that I don't think this info needs to be in the kill feed. I know we have a setting to hide it, but that also hides the ghost caps, which I do want to see.

First we should establish what the purpose is of showing rank ups. If the goal is to make the xp/rank system less opaque, I think a better option would be to look at how CS does it. There money is displayed in its own HUD element, and money added (and for what) is printed in the chat feed. Personally I'd want to have this on the right side instead of the left, with a separate feed from the chat.

Basically, this would inform the player of their own income and rank ups, without cluttering the feed with what other people are doing.