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/stop.md

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+# stop
+
+Stop the motor.
+
+```sig
+motors.largeA.stop()
+```
+
+The motor stops but any motion caused from previously running the motor continues until it runs down. If you are driving your brick and then stop the motors, it will coast for awhile before stopping. If you want the brick to stop right away, use ``||motors:set brake||`` to stop it.
+
+## Example
+
+Run the motor connected to port **A** for 2 seconds at a speed of `30`. Stop and wait for 2 seconds, then continue at a speed of `50`.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+loops.pause(2000)
+motors.largeA.setSpeed(50)
+```
+
+## See also
+
+[set brake](/reference/motors/motor/set-brake), [reset](/reference/motors/motor/reset),