Add support for PiKVM Switch and related features

This commit introduces several new components and improvements:
- Added Switch module with firmware update and configuration support
- Implemented new media streaming capabilities
- Updated various UI elements and CSS styles
- Enhanced keyboard and mouse event handling
- Added new validators and configuration options
- Updated Python version support to 3.13
- Improved error handling and logging

configs/janus/janus.plugin.ustreamer.jcfg

@@ -5,3 +5,7 @@ audio: {
      device = "hw:0"
      tc358743 = "/dev/video0"
 }
+aplay: {
+	device = "plughw:UAC2Gadget,0"
+	check = "/run/kvmd/otg/uac2.usb0@meta.json"
+}

configs/kvmd/main/v4plus-hdmi-rpi4.yaml

@@ -86,13 +86,15 @@ kvmd:
                 pulse: false
 
 
+media:
+    memsink:
+        h264:
+            sink: "kvmd::ustreamer::h264"
+
+
 vnc:
     memsink:
         jpeg:
             sink: "kvmd::ustreamer::jpeg"
         h264:
             sink: "kvmd::ustreamer::h264"
-
-
-otg:
-    remote_wakeup: true

configs/os/services/kvmd-media.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=PiKVM - Media proxy server
+After=kvmd.service
+
+[Service]
+User=kvmd-media
+Group=kvmd-media
+Type=simple
+Restart=always
+RestartSec=3
+
+ExecStart=/usr/bin/kvmd-media --run
+TimeoutStopSec=3
+
+[Install]
+WantedBy=multi-user.target

configs/os/sysusers.conf

@@ -1,4 +1,5 @@
 g kvmd - -
+g kvmd-media - -
 g kvmd-pst - -
 g kvmd-ipmi - -
 g kvmd-vnc - -
@@ -7,6 +8,7 @@ g kvmd-janus - -
 g kvmd-certbot - -
 
 u kvmd - "PiKVM - The main daemon" -
+u kvmd-media - "PiKVM - The media proxy"
 u kvmd-pst - "PiKVM - Persistent storage" -
 u kvmd-ipmi - "PiKVM - IPMI to KVMD proxy" -
 u kvmd-vnc - "PiKVM - VNC to KVMD/Streamer proxy" -
@@ -19,8 +21,11 @@ m kvmd gpio
 m kvmd uucp
 m kvmd spi
 m kvmd systemd-journal
+m kvmd kvmd-media
 m kvmd kvmd-pst
 
+m kvmd-media kvmd
+
 m kvmd-pst kvmd
 
 m kvmd-ipmi kvmd
@@ -32,6 +37,7 @@ m kvmd-janus kvmd
 m kvmd-janus audio
 
 m kvmd-nginx kvmd
+m kvmd-nginx kvmd-media
 m kvmd-nginx kvmd-janus
 m kvmd-nginx kvmd-certbot
 

configs/os/udev/common.rules

@@ -1,3 +1,4 @@
 # Here are described some bindings for PiKVM devices.
 # Do not edit this file.
 KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="eda3", SYMLINK+="kvmd-hid-bridge"
+KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="1080", SYMLINK+="kvmd-switch"

configs/os/udev/v2-hdmiusb-generic.rules

@@ -1,7 +0,0 @@
-# https://unix.stackexchange.com/questions/66901/how-to-bind-usb-device-under-a-static-name
-# https://wiki.archlinux.org/index.php/Udev#Setting_static_device_names
-KERNEL=="video[0-9]*", SUBSYSTEM=="video4linux", SUBSYSTEMS=="usb", ATTR{index}=="0", GROUP="kvmd", SYMLINK+="kvmd-video"
-KERNEL=="hidg0", GROUP="kvmd", SYMLINK+="kvmd-hid-keyboard"
-KERNEL=="hidg1", GROUP="kvmd", SYMLINK+="kvmd-hid-mouse"
-KERNEL=="hidg2", GROUP="kvmd", SYMLINK+="kvmd-hid-mouse-alt"
-KERNEL=="ttyUSB0", GROUP="kvmd", SYMLINK+="kvmd-hid"