fusee: add automatic emummc injection support

exosphere/src/emummc_cfg.h

@@ -59,6 +59,7 @@ typedef struct {
         emummc_partition_config_t partition_cfg;
         emummc_file_config_t file_cfg;
     };
+    //char emu_dir_path[EMUMMC_FILE_PATH_MAX];
 } exo_emummc_config_t;
 
 _Static_assert(sizeof(exo_emummc_config_t) == 0x90, "exo_emummc_config_t definition!");