[FL-2520] FW build with -Wextra (#1185)

* Fixing compiler warnings with -Wextra
* More warnings suppression, WIP
* Even more warning fixes
* Added new lines at end of text files.
* Padding fix
* Additional fixes to warnings on different build configurations; added -Wextra to default build pipeline
* Fixes for Secplus v1
* -additional warnings
* +-Wredundant-decls fixes
* FuriHal: print stack overflow task name in console
* FuriHal: add missing include

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

lib/subghz/subghz_keystore.c

@@ -303,7 +303,7 @@ bool subghz_keystore_save(SubGhzKeystore* instance, const char* file_name, uint8
                 }
                 // HEX Encode encrypted line
                 const char xx[] = "0123456789ABCDEF";
-                for(size_t i = 0; i < len; i++) {
+                for(int i = 0; i < len; i++) {
                     size_t cursor = len - i - 1;
                     size_t hex_cursor = len * 2 - i * 2 - 1;
                     encrypted_line[hex_cursor] = xx[encrypted_line[cursor] & 0xF];
@@ -601,4 +601,4 @@ bool subghz_keystore_raw_get_data(const char* file_name, size_t offset, uint8_t*
     string_clear(str_temp);
 
     return result;
-}
+}