First set of 'motors' topics (#305)

* Start of 'motors' topics

* Draft the 'motor motion' side doc

* Add / update more topics

* Last blast of edits

* Capture some more edits

* Put in movement and steering details

docs/reference/motors/motor/set-brake.md

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+# set Brake
+
+Set the brake on the motor so it won't turn when it has no power.
+
+```sig
+motors.largeA.setBrake(false)
+```
+
+When a the motor is stopped, it can still rotate if an external force is applied to it. This can happen, for example, if your're tanking your brick on a inclined surface and stop the motors. Gravity will push down on the brick and might cause it to start rolling again. You can prevent this movement by setting the brake.
+
+Also, you can use the brake to do simple skid steering for your brick.
+
+## Paramters
+
+* **brake**: a [boolean](/types/boolean) value which is either `true` to set the brake on or `false` to set the brake off.
+
+## Example
+
+Run the motor connected to port **A** for 2 seconds at a speed of `30`. Stop and set the brake.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+motors.largeA.setBrake(true)
+```
+
+## See also
+
+[stop](/reference/motors/motor/stop)