[Core Rulebook] Add prompt for Specification to more Traits

[moo-man]

Traits that could use prompt for specification (similar to Ward trait or Size trait):

• Armour
• Fear
• Terror
• Venom (select dropdown?)
• Grim (Imperial Zoo)
• Spellcaster

If I find more, I will comment under this Issue

From: forien
foundry: 11.315
wfrp4e: 7.1.5
wfrp4e-altdorf: 5.0.1
wfrp4e-archives1: 5.0.1
wfrp4e-archives2: 5.0.0
wfrp4e-core: 5.0.4
wfrp4e-owb2: 5.0.1
wfrp4e-salzenmund: 5.0.1
wfrp4e-up-in-arms: 5.0.0
wfrp4e-wom: 5.0.2
wfrp4e-zoo: 5.0.0
Active Modules: forien-armoury, lib-wrapper, moo-dev

[Txus5012]

I would add here the Etiquette talent.