Allow customizing SocialSpy message format (for commands)

[JasonHorkles]

Feature description

It seems like the formatting for socialspy messages for commands is hardcoded. It would be nice if this was customizable since the plain white is a bit ugly:

Before Adventure, was possible to customize the text color directly after the prefix but it no longer carries over.

How the feature is useful

Lots of white text can get pretty cluttered, whereas allowing formatting (e.g. gray and italics) for such messages could help distinguish things a bit more.

[JasonHorkles]

Update: This is now gray instead, but still overrides any previous text. It may not be a bad idea to make a key like the following:

socialSpyFormat=<gray>{0}

This should allow for the desired additional customization.