add linuxJoystick input module (#10970)

* add linuxJoystick input module

* close epollfd to avoid leaks

bin/config-dist.yaml

@@ -173,6 +173,16 @@ Input:
 
 #  KeyboardDevice: /dev/input/by-id/usb-_Raspberry_Pi_Internal_Keyboard-event-kbd
 
+### Configure device for USB gamepad/joystick input (evdev). The D-pad drives
+### Up/Down/Left/Right; buttons are mapped below. Find button codes with `evtest`.
+#  JoystickDevice: /dev/input/by-id/usb-0079_USB_Gamepad-event-joystick
+### Map evdev button codes (hex or decimal) to actions. Omit to use built-in
+### defaults (select=0x121, cancel=0x122). Actions: select, cancel, back, up,
+### down, left, right, user.
+#  JoystickButtons:
+#    select: 0x122
+#    cancel: 0x121
+
 ### Standard User Button Config
 #  UserButton: 6
 
@@ -199,13 +209,11 @@ Webserver:
 #  SSLKey: /etc/meshtasticd/ssl/private_key.pem # Path to SSL Key, generated if not present
 #  SSLCert: /etc/meshtasticd/ssl/certificate.pem # Path to SSL Certificate, generated if not present
 
-
 HostMetrics:
 #  ReportInterval: 30 # Interval in minutes between HostMetrics report packets, or 0 for disabled
 #  Channel: 0 # channel to send Host Metrics over. Defaults to the primary channel.
 #  UserStringCommand: cat /sys/firmware/devicetree/base/serial-number # Command to execute, to send the results as the userString
 
-
 Config:
 #  DisplayMode: TWOCOLOR # uncomment to force BaseUI
 #  DisplayMode: COLOR # uncomment to force MUI