Support for ESP-NOW Wireless Remote Control (#3237)

* Initial checkin for ESP-NOW remote feature

* cleanup irrelevant comment

* don't bring in espnow package includes when feature disabled

* Formatting and removing inaccurate call mode hardcoding

* Fork ESP Now code by platform (8266 v. esp32)

* compiled html update

* Disable ESP-NOW remote by default on ESP32 until tested

* Enable ESP-NOW remote for ESP32

* Rename ESP NOW define

---------

Co-authored-by: cschwinne <dev.aircoookie@gmail.com>

wled00/xml.cpp

@@ -345,6 +345,14 @@ void getSettingsJS(AsyncWebServerRequest* request, byte subPage, char* dest) //W
     sappend('v',SET_F("AC"),apChannel);
     sappend('c',SET_F("WS"),noWifiSleep);
 
+    #ifndef WLED_DISABLE_ESPNOW
+    sappend('c',SET_F("RE"),enable_espnow_remote);
+    sappends('s',SET_F("RMAC"),linked_remote);
+    #else
+    //hide remote settings if not compiled
+    oappend(SET_F("document.getElementById('remd').style.display='none';"));
+    #endif
+
     #ifdef WLED_USE_ETHERNET
     sappend('v',SET_F("ETH"),ethernetType);
     #else
@@ -377,6 +385,19 @@ void getSettingsJS(AsyncWebServerRequest* request, byte subPage, char* dest) //W
     {
       sappends('m',SET_F("(\"sip\")[1]"),(char*)F("Not active"));
     }
+
+    #ifndef WLED_DISABLE_ESPNOW
+    if (last_signal_src[0] != 0) //Have seen an ESP-NOW Remote
+    {
+      sappends('m',SET_F("(\"rlid\")[0]"),last_signal_src);
+    } else if (!enable_espnow_remote)
+    {
+      sappends('m',SET_F("(\"rlid\")[0]"),(char*)F("(Enable remote to listen)"));
+    } else 
+    {
+      sappends('m',SET_F("(\"rlid\")[0]"),(char*)F("None"));
+    }
+    #endif
   }
 
   if (subPage == 2)