feat(init): add deinit_in_progress to lv_globals

With this in LV_EVENT_DELETE displays and indevs can deinit the drivers too

src/lv_init.c

@@ -37,6 +37,7 @@
  *      DEFINES
  *********************/
 #define lv_initialized  LV_GLOBAL_DEFAULT()->inited
+#define lv_deinit_in_progress  LV_GLOBAL_DEFAULT()->deinit_in_progress
 
 /**********************
  *      TYPEDEFS
@@ -296,6 +297,8 @@ void lv_deinit(void)
         return;
     }
 
+    lv_deinit_in_progress = true;
+
 #if LV_USE_SYSMON
     _lv_sysmon_builtin_deinit();
 #endif