Improvements to ini/payload handling

- Allow no hekate_ipl.ini and create it at 1st hekate boot
- Show Payloads/More configs options when no boot entry in main .ini
- Fix black screen on empty ini/payload folders
- Fix some stack corruption with freeing ini lists (wip)

bootloader/utils/dirlist.c

@@ -51,6 +51,13 @@ char *dirlist(char *directory)
 				continue;
 		}
 		f_closedir(&dir);
+
+		if (!k)
+		{
+			free(temp);
+			free(dir_entries);
+			return NULL;
+		}
 	}
 	else
 	{