[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>

firmware/targets/f7/ble_glue/gap.c

@@ -489,6 +489,7 @@ void gap_stop_advertising() {
 }
 
 static void gap_advetise_timer_callback(void* context) {
+    UNUSED(context);
     GapCommand command = GapCommandAdvLowPower;
     furi_check(osMessageQueuePut(gap->command_queue, &command, 0, 0) == osOK);
 }
@@ -587,6 +588,7 @@ void gap_thread_stop() {
 }
 
 static int32_t gap_app(void* context) {
+    UNUSED(context);
     GapCommand command;
     while(1) {
         osStatus_t status = osMessageQueueGet(gap->command_queue, &command, NULL, osWaitForever);