msg ROS2 compatibility, microdds_client improvements (timesync, reduced code size, added topics, etc), fastrtps purge

- update all msgs to be directly compatible with ROS2
 - microdds_client improvements
   - timesync
   - reduced code size
   - add to most default builds if we can afford it
   - lots of other little changes
 - purge fastrtps (I tried to save this multiple times, but kept hitting roadblocks)

msg/TecsStatus.msg

@@ -0,0 +1,45 @@
+uint64 timestamp		# time since system start (microseconds)
+uint8 TECS_MODE_NORMAL = 0
+uint8 TECS_MODE_UNDERSPEED = 1
+uint8 TECS_MODE_TAKEOFF = 2
+uint8 TECS_MODE_LAND = 3
+uint8 TECS_MODE_LAND_THROTTLELIM = 4
+uint8 TECS_MODE_BAD_DESCENT = 5
+uint8 TECS_MODE_CLIMBOUT = 6
+
+
+float32 altitude_sp
+float32 altitude_filtered
+float32 height_rate_setpoint
+float32 height_rate
+float32 equivalent_airspeed_sp
+float32 true_airspeed_sp
+float32 true_airspeed_filtered
+float32 true_airspeed_derivative_sp
+float32 true_airspeed_derivative
+float32 true_airspeed_derivative_raw
+float32 true_airspeed_innovation
+
+float32 total_energy_error
+float32 energy_distribution_error
+float32 total_energy_rate_error
+float32 energy_distribution_rate_error
+
+float32 total_energy
+float32 total_energy_rate
+float32 total_energy_balance
+float32 total_energy_balance_rate
+
+float32 total_energy_sp
+float32 total_energy_rate_sp
+float32 total_energy_balance_sp
+float32 total_energy_balance_rate_sp
+
+float32 throttle_integ
+float32 pitch_integ
+
+float32 throttle_sp
+float32 pitch_sp_rad
+float32 throttle_trim	# estimated throttle value [0,1] required to fly level at equivalent_airspeed_sp in the current atmospheric conditions
+
+uint8 mode