add aircraft lookup to highFlying info

@Cisien for the idea

modules/locationdata.py

@@ -957,4 +957,60 @@ def distance(lat=0,lon=0,nodeID=0, reset=False):
         if not dupe:
             howfarDB[nodeID].append({'lat': lat, 'lon': lon, 'time': datetime.now()})
 
-        return msg
+        return msg
+
+def get_openskynetwork(lat=0, lon=0):
+    # get the latest aircraft data from OpenSky Network in the area
+    if lat == 0 and lon == 0:
+        return NO_ALERTS
+    # setup a bounding box of 50km around the lat/lon
+    box_size = 0.45 # approx 50km
+    # return limits for aircraft search
+    search_limit = 5
+    lamin = lat - box_size
+    lamax = lat + box_size
+    lomin = lon - box_size
+    lomax = lon + box_size
+
+    # fetch the aircraft data from OpenSky Network
+    opensky_url = f"https://opensky-network.org/api/states/all?lamin={lamin}&lomin={lomin}&lamax={lamax}&lomax={lomax}"
+    try:
+        aircraft_data = requests.get(opensky_url, timeout=urlTimeoutSeconds)
+        if not aircraft_data.ok:
+            logger.warning("Location:Error fetching aircraft data from OpenSky Network")
+            return ERROR_FETCHING_DATA
+    except (requests.exceptions.RequestException):
+        logger.warning("Location:Error fetching aircraft data from OpenSky Network")
+        return ERROR_FETCHING_DATA
+    aircraft_json = aircraft_data.json()
+    if 'states' not in aircraft_json or not aircraft_json['states']:
+        return NO_ALERTS
+    aircraft_list = aircraft_json['states']
+    aircraft_report = ""
+    for aircraft in aircraft_list:
+        if len(aircraft_report.split("\n")) >= search_limit:
+            break
+        # extract values from JSON
+        try:
+            callsign = aircraft[1].strip() if aircraft[1] else "N/A"
+            origin_country = aircraft[2]
+            velocity = aircraft[9]
+            true_track = aircraft[10]
+            vertical_rate = aircraft[11]
+            sensors = aircraft[12]
+            geo_altitude = aircraft[13]
+            squawk = aircraft[14] if len(aircraft) > 14 else "N/A"
+        except Exception as e:
+            logger.debug("Location:Error extracting aircraft data from OpenSky Network")
+            continue
+        
+        # format the aircraft data
+        aircraft_report += f"✈️{callsign} Alt:{int(geo_altitude) if geo_altitude else 'N/A'}m Vel:{int(velocity) if velocity else 'N/A'}m/s Heading:{int(true_track) if true_track else 'N/A'}°\n"
+    
+    # remove last newline
+    if aircraft_report.endswith("\n"):
+        aircraft_report = aircraft_report[:-1]
+    aircraft_report = abbreviate_noaa(aircraft_report)
+    return aircraft_report if aircraft_report else NO_ALERTS
+
+