🔨 Death to raw operator `new`

[zach2good]

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Describe the feature

I was looking at Teo's PR: https://github.com/LandSandBoat/server/pull/5163 and it struck me how we still have a lot of use of new. We have the capacity to use unique_ptr, but that's very verbose. I propose we template the pushPacket call and forward the args.

A la:

PChar->pushPacket<CMessageBasicPacket>(PChar, PChar, 0, 0, MSGBASIC_CANNOT_USE_IN_AREA);

[TeoTwawki]

propose we template the pushPacket call and forward the args.

oh yes please