Feature request: Jam alert support

[nmaster2042]

A new function of the rfplayer is the jam alert. It can detect a jamming attack.

Support for jam alert would be a good add to the plugin.

[macharpen]

Hello. I just implemented it in my plugin, I deposited it in the patch1 branch.

the plugin will create an alert in the "measure" page of domoticz.

the setting of the detection level is done in the config drop-down menu, knowing that Ziblue recommends threshold 7.
to test and make appear it must be passed to 1 to test.