PX4 ROS2 msg conformity and explicit topics

- .msg files are PascalCase
 - topics are still either per msg or explicitly listed in TOPICS
 - compatible structs are still generated (eg struct msg_s), but ROS2 style px4::msg::Msg is also available

Tools/astyle/files_to_check_code_style.sh

@@ -8,7 +8,6 @@ if [ $# -gt 0 ]; then
 fi
 
 exec find boards msg src platforms test \
-    -path msg/templates/urtps -prune -o \
     -path platforms/nuttx/NuttX -prune -o \
     -path platforms/qurt/dspal -prune -o \
     -path src/drivers/uavcan/libuavcan -prune -o \
@@ -21,8 +20,6 @@ exec find boards msg src platforms test \
     -path src/modules/ekf2/EKF -prune -o \
     -path src/modules/gyro_fft/CMSIS_5 -prune -o \
     -path src/modules/mavlink/mavlink -prune -o \
-    -path src/modules/micrortps_bridge/micro-CDR -prune -o \
-    -path src/modules/micrortps_bridge/microRTPS_client -prune -o \
     -path test/mavsdk_tests/catch2 -prune -o \
     -path src/lib/crypto/monocypher -prune -o \
     -path src/lib/crypto/libtomcrypt -prune -o \