fix: Rebrand systemd templates, polkit rules, and install scripts

- src/templates/pipedald.service.template — user/group pipedal_d → oppedal_d
- src/templates/pipedaladmind.service.template — WorkingDirectory /var/pipedal → /var/oppedal
- src/templates/pipedal_nm_p2pd.service.template — Description and WorkingDirectory
- src/templates/pipedal_p2pd.service.template — Description and WorkingDirectory
- src/templates/pipedal_p2pd.conf.template — p2p_model_name, manufacturer
- src/templates/jack.service.template — After=pipedald → After=oppedald
- src/templates/*.conf — PiPedal/pipedal-* → OP-Pedal/oppedal-* references
- src/polkit-1/rules/10-pipedal-networkmanager.rules — group pipedal_d → oppedal_d
- install.sh — pipedalconfig/oppedalconfig binary paths
- uninstall.sh — /etc/pipedal, /var/pipedal → /etc/oppedal, /var/oppedal
- run.sh — pipedald → oppedald, /etc/pipedal → /etc/oppedal

src/templates/30-pipedal-p2p.conf

@@ -5,7 +5,7 @@ server=8.8.4.4
 interface=p2p-wlan0-0
     dhcp-range=192.168.60.3,192.168.60.127,15m
     domain=local                        
-    address=/pipedal.local/192.168.60.2   
+    address=/oppedal.local/192.168.60.2   
     
 except-interface=eth0
 except-interface=wlan0