Factor out sendBeastSettings(), use it in view1090.

net_io.c

@@ -784,6 +784,24 @@ static void handle_radarcape_position(float lat, float lon, float alt)
     }
 }
 
+// Send some Beast settings commands to a client
+void sendBeastSettings(struct client *c, const char *settings)
+{
+    int len;
+    char *buf, *p;
+
+    len = strlen(settings) * 3;
+    buf = p = alloca(len);
+
+    while (*settings) {
+        *p++ = 0x1a;
+        *p++ = '1';
+        *p++ = *settings++;
+    }
+
+    anetWrite(c->fd, buf, len);
+}
+
 //
 //=========================================================================
 //