Initial Matek m9nf4 can node support

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Added uavcan board identity

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Added usb.c, LED rework may be needed

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

PX4 dates added to all files

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Matek M9NF4 CAN Node initial board support

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Changed GPS to ttyS3 in board sensors, led board on/off definitions

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Added app descriptor section to canbootloader linker script

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Changed board naming convention to match vendor

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Changed canbootloader and nsh menuconfig

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Test defconfig changes, IRQ hardfault in bootloader

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

Working canbootloader, App firmware stil WIP

Working App firmware: changed romfsroot to 'cannode', TODO: verify GPS & IMU config

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

TODO: Debug GPS no sats/low sats issue, no magnetometer on some boards

Signed-off-by: dirksavage88 <dirksavage88@gmail.com>

.vscode/cmake-variants.yaml

@@ -196,6 +196,16 @@ CONFIG:
       buildType: MinSizeRel
       settings:
         CONFIG: matek_h743-slim_default
+    matek_gnss-m9n-f4_canbootloader:
+      short: matek_gnss-m9n-f4_canbootloader
+      buildType: MiniSizeRel
+      settings:
+        CONFIG: matek_m9nf4can_canbootloader
+    matek_gnss-m9n-f4_default:
+      short: matek_gnss-m9n-f4_default
+      buildType: MiniSizeRel
+      settings:
+        CONFIG: matek_gnss-m9n-f4_default
     modalai_fc-v1_default:
       short: modalai_fc-v1
       buildType: MinSizeRel