Implement XDG compliance, logging, and improved 401 error handling

- Install to ~/.local/bin/winamp-mpris
- Use ~/.local/state/winamp-mpris/bridge.log for logging
- Use $XDG_RUNTIME_DIR/winamp-mpris.pid for PID management
- Add detailed user notification for 401 Unauthorized errors
- Add install.sh for automated, standard-compliant setup
- Include Winamp Web Interface source code and installer in repository

gen_httpSrv_systray/client.ini

@@ -0,0 +1,15 @@
+[Wawi Tray]
+port=800
+default=105
+updatedelay=10
+auth=1
+host=10.2.169.200
+username=bob
+password=password
+[Winamp HTTP Server Client Applet]
+port=800
+default=105
+updatedelay=10
+host=127.0.0.1
+username=anon
+password=