Added condition to cli "log" command to end if serial terminal is disconnected. (#1425)

* Added condition to cli "log" command. If USB is disconnected while "log" command is running, it will end the command.
* Reverted change on cli_commands.c
  Added condition in cli.c for cli_cmd_interrupt_received function to react appropriately when serial terminal is disconnected.
  Added condition in subghz_cli.c for subghz chat cmd to exit gracefully when serial terminal is disconnected.
* Formatting

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

applications/subghz/subghz_cli.c

@@ -676,6 +676,11 @@ static void subghz_cli_command_chat(Cli* cli, string_t args) {
                 break;
             }
         }
+        if(cli_is_connected(cli)) {
+            printf("\r\n");
+            chat_event.event = SubGhzChatEventUserExit;
+            subghz_chat_worker_put_event_chat(subghz_chat, &chat_event);
+        }
     }
 
     string_clear(input);