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-adsb.service

@@ -6,13 +6,13 @@ Wants=network.target
 
 [Service]
 Type=simple
-User=skyview
-Group=skyview
-ExecStart=/usr/bin/skyview -config /etc/skyview/config.json
-WorkingDirectory=/var/lib/skyview
+User=skyview-adsb
+Group=skyview-adsb
+ExecStart=/usr/bin/skyview -config /etc/skyview-adsb/config.json
+WorkingDirectory=/var/lib/skyview-adsb
 StandardOutput=journal
 StandardError=journal
-SyslogIdentifier=skyview
+SyslogIdentifier=skyview-adsb
 Restart=always
 RestartSec=5
 
@@ -37,7 +37,7 @@ RestrictNamespaces=true
 PrivateNetwork=false
 
 # Allow writing to log directory
-ReadWritePaths=/var/log/skyview
+ReadWritePaths=/var/log/skyview-adsb
 
 # Capabilities
 CapabilityBoundingSet=CAP_NET_BIND_SERVICE