Set default minimum and maximum PWM for motors

This allows to consistently define:
Motor stopped - disarmed PWM
Motor idling - minimum PWM
Motor at full thrust - maximum PWM

Any allocation can then distinctly decide if
a motor should be running or not depending
on the context and also explicitly command that.

src/drivers/linux_pwm_out/module.yaml

@@ -4,7 +4,7 @@ actuator_output:
     - param_prefix: PWM_MAIN
       channel_label: 'Channel'
       standard_params:
-        disarmed: { min: 800, max: 2200, default: 900 }
+        disarmed: { min: 800, max: 2200, default: 1000 }
         min: { min: 800, max: 1400, default: 1000 }
         max: { min: 1600, max: 2200, default: 2000 }
         failsafe: { min: 800, max: 2200 }