Add kyber-launcher service for native Linux AppImage install

Installs the Kyber community multiplayer launcher (simonlinuxcraft/kyber-
linuxport-unofficial) via the setup.sh wizard. Handles glibc check, bwrap/
userns fix, GitHub release fetch, desktop entry, and bin symlink. Warns on
Intel integrated graphics and links to Sunshine as the streaming alternative.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D8ckUJQtj1pH8jtAddBDZs

README.md

@@ -70,7 +70,7 @@ Update them any time with `sudo ./setup.sh configure`.
 | `utilities` | `actualbudget`, `ai-gpu`, `archivebox`, `changedetection`, `ddclient`, `filebrowser`, `fmd`, `gatus`, `homebox`, `iopaint`, `joplin`, `koha`, `magicmirror`, `mail-archiver`, `mattermost`, `mealie`, `meshcentral`, `n8n`, `nextcloud`, `ntfy`, `onlyoffice`, `portainer`, `rustdesk`, `stirling-pdf`, `syncthing`, `traccar`, `unifi`, `uptimekuma`, `vaultwarden`, `watchyourlan`, `watchtower`, `wg-easy` |
 | `media` | `arm`, `audiobookshelf`, `calibre-web`, `emby`, `immich`, `jellyfin`, `lyrion` |
 | `cameras` | `frigate`, `frigate-audio`, `frigate-notify`, `sky-cam` |
-| `gaming` | `drum-rhythm-game`, `js99er`, `kyber-server`, `minecraft`, `wolf`, `wolf-pair` |
+| `gaming` | `drum-rhythm-game`, `js99er`, `kyber-launcher`, `kyber-server`, `minecraft`, `wolf`, `wolf-pair` |
 | `extras` | `kdeconnect`, `silent-send`, `sync-cc` |
 | `backup` | `backup` — complete recovery: entire `~/docker/<service>/` for every service via Kopia (Minecraft: flush+snap, no downtime; others: stop/snap/start for DB consistency); `borg-backup` — same coverage via Borg (chunk dedup, SSH remote repos, Borgmatic/Vorta compatible); `gaming-backup` — frequent game-save snapshots (Minecraft world data, emulator saves, Steam — no downtime, run hourly) |