Merge branch 'main' of github.com:CampusIoT/chirpstack-monitoring into main

sandbox/devices_maps.md

+# Devices Map
+
+Show a HTML report (status and stats) of located devices into a [leafletjs](https://leafletjs.com/) map
+when the location is set into `.location` or `.device.tags[geolocation]`.
+
+```bash
+curl 'https://lns.campusiot.imag.fr/api/devices/a81758fffe04b1bc' -H 'Accept: application/json' -H 'Grpc-Metadata-Authorization: Bearer ZZZ.YYY.XX'
+```
+
+```json
+{
+  "device": {
+    "devEUI": "a81758fffe04b1bc",
+    "name": "ELSYS_EMS_B1BC",
+    "applicationID": "36",
+    "description": "Elsys EMS",
+    "deviceProfileID": "72bc2657-d387-4257-b883-b97e9763997f",
+    "skipFCntCheck": false,
+    "referenceAltitude": 0,
+    "variables": {
+      "ThingsBoardAccessToken": "6lOGIM40BOdVRIeOGgGo"
+    },
+    "tags": {
+      "email_owner": "admin@campusiot.imag.fr",
+      "geolocation": "45.1902749,5.7670241"
+    }
+  },
+  "lastSeenAt": "2021-02-01T06:23:19.260728Z",
+  "deviceStatusBattery": 100,
+  "deviceStatusMargin": 28,
+  "location": null
+}
+```

sandbox/gateways_stats.md

+# Gateway Stats
+
+## Per day
+```bash
+curl 'https://lns.campusiot.imag.fr/api/gateways/0000024b08060392/stats?interval=DAY&startTimestamp=2020-01-01T00%3A00%3A00.001Z&endTimestamp=2021-01-01T00%3A00%3A00.001Z' \
+-H 'Accept: application/json' \
+-H 'Grpc-Metadata-Authorization: Bearer ZZZ.YYY.XXX' \
+ | jq .
+```
+
+## Per month
+```bash
+curl 'https://lns.campusiot.imag.fr/api/gateways/0000024b08060392/stats?interval=MONTH&startTimestamp=2020-01-01T00%3A00%3A00.001Z&endTimestamp=2021-01-01T00%3A00%3A00.001Z' \
+-H 'Accept: application/json' \
+-H 'Grpc-Metadata-Authorization: Bearer ZZZ.YYY.XXX' \
+ | jq .
+```