[netatmo] Adding a request counter (#13494)

* Adding a request counter channel to Api Bridge thing.

Signed-off-by: clinique <gael@lhopital.org>

bundles/org.openhab.binding.netatmo/README.md

@@ -52,6 +52,13 @@ The Account bridge has the following configuration elements:
 
 (*) Strictly said this parameter is not mandatory at first run, until you grant your binding on Netatmo Connect. Once present, you'll not have to grant again.
 
+**Supported channels for the Account bridge thing:**
+
+| Channel Group | Channel Id    | Item Type | Description                                                       |
+|---------------|---------------|-----------|-------------------------------------------------------------------|
+| monitoring    | request-count | Number    | Number of request transmitted to Netatmo API during the last hour |
+
+
 ### Configure the Bridge
 
 1. Complete the Netatmo Application Registration if you have not already done so, see above.