Add the Tools > Ban List window

Reimplements the official client's ban list: a searchable table of the
server's bans with Add / Remove / Edit, an own-ban filter and highlight,
choosable columns, and the Add/Edit dialog whose IP and name patterns
can be read as IPv4/IPv6 wildcards, fixed strings or regular expressions
(translated to the regexes banadd takes exactly as the official client
does). Editing is add-then-delete, since the protocol has no banedit.

The ban list is read from the notifybanlist burst that answers banlist,
like channelpermlist. The menu item is only shown where the server grants
b_client_ban_list.

Also fixes ServerModel numbering permissions from 0 instead of 1, which
had every selfPermissionValue() lookup reading the neighbouring
permission — including the group-assignment menus.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

ts3-client/README.md

@@ -76,6 +76,11 @@ frontend supplies its own UI and audio backend while reusing `core` unchanged.
 - **Identity management** (Tools → Identities) — keep several identities, mark one
   as the default, pick one per server or per bookmark, rename, raise an identity's
   security level, and import/export TeamSpeak-compatible `.ini` identity files.
+- **Ban List** (Tools → Ban List) — the server's bans in a searchable table (Add /
+  Remove / Edit, own-ban filter and highlighting, choosable columns), with the
+  official Add dialog: IP and nickname patterns read as IPv4/IPv6 wildcards, fixed
+  strings or regular expressions, unique id, myTeamSpeak id, reason presets and a
+  duration capped by `i_client_ban_max_bantime`.
 - **Self status** — Away (with message) and Channel Commander toggles.
 - **Status bar** shows the server name, user count and live ping.
 - Change your nickname, mute/deafen from the toolbar.