added the possibilities to force SPIFFS update

Author: gb88

src/esp32FOTA.cpp

@@ -851,6 +851,15 @@ void esp32FOTA::forceUpdate(const char* firmwareURL, bool validate )
     execOTA();
 }
 
+// Force a firmware update regardless on current version
+void esp32FOTA::forceUpdateSPIFFS(const char* firmwareURL, bool validate )
+{
+    _firmwareUrl = firmwareURL;
+    _flashFileSystemUrl = firmwareURL;
+    _cfg.check_sig = validate;
+    execOTA();
+}
+
 
 void esp32FOTA::forceUpdate(const char* firmwareHost, uint16_t firmwarePort, const char*  firmwarePath, bool validate )
 {

src/esp32FOTA.hpp

@@ -246,6 +246,8 @@ class esp32FOTA
   void forceUpdate(const char* firmwareURL, bool validate );
   void forceUpdate(bool validate );
 
+  void forceUpdateSPIFFS(const char* firmwareURL, bool validate );
+
   void handle();
 
   bool execOTA();