Rename Debian package from skyview to skyview-adsb

The official Debian repositories already contain a package named
"skyview" which is associated with NASA's SkyView Virtual Observatory
(https://skyview.gsfc.nasa.gov/), a tool for astronomical data
visualization.

To avoid package naming conflicts and potential confusion for users,
this commit renames our ADS-B aircraft tracking application package
to "skyview-adsb". This clearly indicates the package's purpose
(ADS-B tracking) while maintaining the SkyView brand identity.

Changes:
- Package name: skyview → skyview-adsb
- System user/group: skyview → skyview-adsb
- Config directory: /etc/skyview → /etc/skyview-adsb
- Data directory: /var/lib/skyview → /var/lib/skyview-adsb
- Log directory: /var/log/skyview → /var/log/skyview-adsb
- Systemd service: skyview.service → skyview-adsb.service
- Documentation path: /usr/share/doc/skyview → /usr/share/doc/skyview-adsb

The binaries (/usr/bin/skyview and /usr/bin/beast-dump) remain
unchanged as they don't conflict at the filesystem level.

This ensures clean installation alongside any existing skyview
packages and prevents apt/dpkg conflicts during installation.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

debian/lib/systemd/system/skyview.service

@@ -1,47 +0,0 @@
-[Unit]
-Description=SkyView Multi-Source ADS-B Aircraft Tracker
-Documentation=https://github.com/skyview/skyview
-After=network.target
-Wants=network.target
-
-[Service]
-Type=simple
-User=skyview
-Group=skyview
-ExecStart=/usr/bin/skyview -config /etc/skyview/config.json
-WorkingDirectory=/var/lib/skyview
-StandardOutput=journal
-StandardError=journal
-SyslogIdentifier=skyview
-Restart=always
-RestartSec=5
-
-# Security settings
-NoNewPrivileges=true
-ProtectSystem=strict
-ProtectHome=true
-PrivateTmp=true
-PrivateDevices=true
-ProtectHostname=true
-ProtectClock=true
-ProtectKernelTunables=true
-ProtectKernelModules=true
-ProtectKernelLogs=true
-ProtectControlGroups=true
-RestrictRealtime=true
-RestrictSUIDSGID=true
-RemoveIPC=true
-RestrictNamespaces=true
-
-# Allow network access
-PrivateNetwork=false
-
-# Allow writing to log directory
-ReadWritePaths=/var/log/skyview
-
-# Capabilities
-CapabilityBoundingSet=CAP_NET_BIND_SERVICE
-AmbientCapabilities=CAP_NET_BIND_SERVICE
-
-[Install]
-WantedBy=multi-user.target