static-neighbor-reports: add package

Signed-off-by: David Bauer <mail@david-bauer.net>

net/static-neighbor-reports/README.md

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+# static-neighbor-reports
+The `static-neighbor-reports` package allows a user to configure static neighbor reports which
+are available for clients to be polled in case they support IEEE802.11k. This greatly improves
+the wireless experiences in terms of mobility.
+
+Make sure to enable `ieee80211k` for each VAP neighbor reports should be installed to.
+
+## Configuring
+The uci config name is `static-neighbor-report`. There's currently only the section
+type `neighbor`.
+
+### neighbor
+The followign options are supported for `neighbor` sections:
+
+#### neighbor_report
+This is the binary neighbor report element from a foreign AP. It is required for each neighbor.
+
+#### disabled
+Values other than `0` disable the neighbor. It won't be installed into hostapd in this case.
+If this option is missing, the neighbor is implicitly active.
+
+#### bssid
+The BSSID of the foreign AP. This option can usually be omitted, as it's implicitly present in
+the first 6 bytes of the binary neighbor report element.
+
+#### ssid
+The SSID of the foreign AP. This option can be omitted, in case it matches the SSID used on the local AP.
+
+#### iface
+Space seperated list of hostapd interfaces the neighbor should be installed to.
+
+## Retrieving neighbor information
+To retrieve the neighbor informations of an AP to be isntalled on a foreign AP, make sure the UCI option
+`ieee80211k` is set to `1` on the VAP.
+
+Execute `ubus call hostapd.<ifname> rrm_nr_get_own` on the AP. To get a list of all available interfaces,
+execute `ubus list`.
+
+The returned information  follows this format:
+
+```json
+{
+    "value": [
+        "<BSSID>",
+        "<SSID>",
+        "<Neighbot report element>"
+    ]
+}
+```