add default parameters for dronecan application

Src/dronecan_application/default_params.yml

@@ -1 +1,25 @@
-uavcan.node.id:         39
+uavcan.node.id: 39
+pwm.cmd_ttl_ms: 0
+pwm.frequency: 50
+pwm.cmd_type: 1
+pwm.1_ch: 0
+pwm.1_min: 1000
+pwm.1_max: 2000
+pwm.1_def: 1000
+pwm.1_feedback: 1
+pwm.2_ch: 0
+pwm.2_min: 1000
+pwm.2_max: 2000
+pwm.2_def: 1000
+pwm.2_feedback: 0
+pwm.3_ch: 0
+pwm.3_min: 1000
+pwm.3_max: 2000
+pwm.3_def: 1000
+pwm.3_feedback: 0
+pwm.4_ch: 0
+pwm.4_min: 1000
+pwm.4_max: 2000
+pwm.4_def: 1000
+pwm.4_feedback: 0
+system.name: co.raccoonlab.mini