Allow mouse-free and message-free KI commands to select KI folders: /age, /neighbors, and /buddies

[ZarothYe]

This allows users to change chat context for future messages without clicking on the KI folders. For example, if you are PMing/whispering to someone, then want to stop whispering and start sending future messages to all Age Players, you can switch context by using "/age<Enter>" and it behaves like you have clicked the AGE PLAYERS folder from your KI list.

Should be merged alongside this moul-assets PR.

[Deledrius]

Awesome! Looks like this PR has a few extraneous commits in it, though.

[Hoikas]

This looks good in testing. Question, though, when you sent buddy chat via /buddies<enter> then message, the resulting error is different from if you send the message via /buddies hello!<enter>. Is that related to this PR or just some old issue?

[ZarothYe]

This looks good in testing. Question, though, when you sent buddy chat via /buddies<enter> then message, the resulting error is different from if you send the message via /buddies hello!<enter>. Is that related to this PR or just some old issue?

This appears to be just because it's going through different handling in IAddChatLine. See xKIChat line #333 vs line #384. I think it would end up doing the "Everyone in list" message if you clicked the KI "BUDDIES" folder and sent a message rather than using /buddies <message> as well.