device: Update Cambium devices to the new wireless sensors (#7703)

* Inital cambium refactor

* Refactored tests

* Remove CMM from pmp group

* Add sensors / Give CMM individual OS

* Fix linting

* More Sensors / states and Revised Headers

* Added old graphs / more sensors

* Add modulation rate to sensor

* Fix Hardware detection bug

* Further hardware detection refinments

* Modify pmp hardware detection

* New Wireless Metric - SSR

* SSR Sensor Graph

* Migrate SSR to metric

* Added last metric file

* Add master check to isAp method

* Fix variables in epmp

* CMM Discovery and state addition

* Add another test for cmm

LibreNMS/Device/WirelessSensor.php

@@ -175,6 +175,12 @@ class WirelessSensor extends Sensor
                 'unit' => 'dB',
                 'icon' => 'signal',
             ),
+            'ssr' => array(
+                'short' => 'SSR',
+                'long' => 'Signal Strength Ratio',
+                'unit' => 'dB',
+                'icon' => 'signal',
+            ),
             'mse' => array(
                 'short' => 'MSE',
                 'long' => 'Mean Square Error',