Add popup chat feature

[RedRafe]

Add chat message to map surface too as temporarily popups attached to the player and with the same color.

Configurable by config

• enabled: true/false
• min_lifetime: 5s
• max_lifetime: 20s
• allows rich-text

The longer the message is, the longer it lasts (clamped between min/max config values).

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[RedRafe]

After testing it in MP with TheKid we decided it was safer to set a max length to message being displayed (& adjusted the offset to not overlap with player's name)

[RedRafe]

Yeah makes sense to pass the safer message to the time computing as well. I've added the min/max length to the config file along some info commentary too, could be useful