MPU Hal (#1492)

* Furi HAL: memory protection unit
* Core: prohibit NULL dereferencing, even for reads.
* Applications: fix NULL dereference
* Core: stack protection by MPU
* MPU: stack region alignment
* Apps: fix null pointer dereferences
* Threads: fix non-null arg check
* Desktop settings: fix null pointer dereference
* Core: documented null-check hack
* Fix null dereference issues
* Apps: args check
* Core: naming fixes
* format code
* Core: remove NONNULL specifier
* FurHal: move MPU initialization to begining, fix enum naming

Co-authored-by: あく <alleteam@gmail.com>

applications/subghz/scenes/subghz_scene_save_name.c

@@ -59,8 +59,8 @@ void subghz_scene_save_name_on_enter(void* context) {
         MAX_TEXT_INPUT_LEN, // buffer size
         dev_name_empty);
 
-    ValidatorIsFile* validator_is_file = validator_is_file_alloc_init(
-        string_get_cstr(subghz->file_path), SUBGHZ_APP_EXTENSION, NULL);
+    ValidatorIsFile* validator_is_file =
+        validator_is_file_alloc_init(string_get_cstr(subghz->file_path), SUBGHZ_APP_EXTENSION, "");
     text_input_set_validator(text_input, validator_is_file_callback, validator_is_file);
 
     string_clear(file_name);