Add per-player public chat toggle to void list

[Valiice]

Voiding a player currently silences them on every channel, tells included. This
adds a per-player opt-in so you can keep someone's model hidden and their tells
blocked while still seeing them talk in the world and in duties.

Adds a Public chat column to the VoidList window with a checkbox per entry.

State	Result
Unticked (default)	Unchanged. Every message from them is hidden
Ticked	Say, shout, yell, emotes, party, cross-world party and alliance are shown

Tells, free company, linkshells and every other channel stay hidden in both
states.

VoidItem.ShowPublicChat defaults to false, so existing configs behave
exactly as before. No version bump, no migration.

Both new keys are added to all 11 locale files, because Localization.GetString
falls back to the key name rather than English. The non-English wording is a
best-effort pass; happy to defer to Crowdin on the phrasing.