Refactor posting items to chat to take a declarative approach, reduce boilerplate

[kvndrsslr]

Implement item cards for these types:

• armor
• condition
• disease
• disorder
• drawback
• injury
• profession
• ritual
• skill
• spell
• taint
• talent
• trait
• trapping
• uniqueAdvance
• weapon

These item types are probably never posted to chat on their own:

• ancestry
• quality

[kvndrsslr]

Most prominent items are supported for now, for the rest the fallback template now shows flavor text & effects. Should be refactored to a declarative approach in the future (like the items lists in sheets), but no high prio atm