[Build] Make sure SDFS and LittleFS are not linked in the build

See: esp8266/Arduino#8483

Author: TD-er

platformio_core_defs.ini

@@ -50,6 +50,7 @@ build_flags               = -DNDEBUG
                             -DPUYA_SUPPORT=1
                             -DCORE_POST_2_5_0
                             -fno-strict-aliasing
+                            -DFS_NO_GLOBALS
 lib_ignore                = ${esp82xx_defaults.lib_ignore}
 
 [esp82xx_2_6_x]

src/ESPEasy_common.h

@@ -66,7 +66,9 @@ namespace std
 #include "src/Globals/RamTracker.h"
 
 
-#define FS_NO_GLOBALS
+#ifndef FS_NO_GLOBALS
+  #define FS_NO_GLOBALS
+#endif
 #if defined(ESP8266)
 
   #ifndef CORE_POST_3_0_0

src/src/Helpers/FS_Helper.h

@@ -8,7 +8,9 @@
 // Macro used to make file system operations a bit more readable.
 #define SPIFFS_CHECK(result, fname) if (!(result)) { return(FileError(__LINE__, fname)); }
 
-#define FS_NO_GLOBALS
+#ifndef FS_NO_GLOBALS
+  #define FS_NO_GLOBALS
+#endif
 #if defined(ESP8266)
   extern "C" {
     #include <spi_flash.h>