Extend Status (#121)

* Added Sdk Version and ~heap fragmentation to system page
* Add flash chip speed to status page

Co-authored-by: kasedy <kasedy@gmail.com>

lib/framework/SystemStatus.cpp

@@ -12,8 +12,10 @@ void SystemStatus::systemStatus(AsyncWebServerRequest* request) {
   JsonObject root = response->getRoot();
 #ifdef ESP32
   root["esp_platform"] = "esp32";
+  root["max_alloc_heap"] = ESP.getMaxAllocHeap();
 #elif defined(ESP8266)
   root["esp_platform"] = "esp8266";
+  root["max_alloc_heap"] = ESP.getMaxFreeBlockSize();
 #endif
   root["cpu_freq_mhz"] = ESP.getCpuFreqMHz();
   root["free_heap"] = ESP.getFreeHeap();