Threshold api docs - 01 (#336)

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* Throw on more topics

* Throw in threshold topics for infrared

libs/infrared-sensor/docs/reference/sensors/infrared/proximity-threshold.md

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+# proximity Threshold
+
+Get the proximity threshold for when objects are near and detected.
+
+```sig
+sensors.infraredSensor1.proximityThreshold(InfraredSensorEvent.ObjectNear)
+```
+
+Infrared sensors determine proximity of an object by measuring the intensity of the infrared light reflected from it. The proximity range of measurment is from `0` to `100`. Proximity _thresholds_ use a value in this range to decide when a proximity event should happen for a detected object.
+
+## Parameters
+
+* **condition**: the proximity threshold to return a value for. These are: ``near`` and ``detected``.
+
+## Returns
+
+* a [number](/types/number) that is the proximity value for the threshold. This is a number between `0` and `100`.
+
+## Example
+
+When an object with near proximity is detected, show what the threshold is.
+
+```blocks
+sensors.infraredSensor1.onEvent(InfraredSensorEvent.ObjectNear, function () {
+    brick.showValue("NearObjectThreshold", sensors.infraredSensor1.proximityThreshold(InfraredSensorEvent.ObjectNear)
+, 1)
+})
+```
+
+## See also
+
+[set proximity threshold](/reference/sensors/infrared/set-proximity-threshold)

libs/infrared-sensor/docs/reference/sensors/infrared/set-proximity-threshold.md

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+# set Proximity Threshold
+
+Set the proximity threshold for when objects are near or detected.
+
+```sig
+sensors.infraredSensor1.setPromixityThreshold(InfraredSensorEvent.ObjectNear, 0)
+```
+
+Infrared sensors determine proximity of an object by measuring the intensity of the infrared light reflected from it. The proximity range of measurment is from `0` to `100`. You can decide what value in that range you want mean that something is near or that something was detected.
+
+If you want a proximity value of `32` to mean that a detected object is near, then the ``near`` threshold is set to that value. If you want any object within a proximity of `95` to cause a detection event, then the ``detected`` threshold is set to `95`.
+
+## Parameters
+
+* **condition**: the threshold condition to use this proximity. These are: ``near`` and ``detected``.
+* **value**: a proximity [number](/types/number) to set the threshold for.
+
+## Example
+
+Set a threshold for detecting something moving within a proximity `30`. Wait for an object to show up. When it does, flash the status light and make noise as an alarm.
+
+```blocks
+sensors.infraredSensor1.setPromixityThreshold(InfraredSensorEvent.ObjectDetected, 30)
+sensors.infraredSensor1.pauseUntil(InfraredSensorEvent.ObjectDetected)
+brick.clearScreen()
+brick.showString("Perimeter Breach!!!", 3)
+brick.setStatusLight(StatusLight.RedFlash)
+for (let i = 0; i < 10; i++) {
+    music.playSoundEffectUntilDone(sounds.mechanicalHorn2)
+}
+```
+
+## See also
+
+[proximity threshold](/reference/sensors/infrared/proximity-threshold)