Reimplement --securerandom

Seeds should be reproducable without the flag passed, and unreproducable with the flag passed.
With --securerandom, generate a 9-char alphanumeric string to use to make filenames differ.

Rom.py

@@ -5,7 +5,7 @@ import json
 import hashlib
 import logging
 import os
-import random
+import RaceRandom as random
 import struct
 import sys
 import subprocess
@@ -1542,8 +1542,9 @@ def patch_rom(world, rom, player, team, enemized, is_mystery=False):
     # set rom name
     # 21 bytes
     from Main import __version__
+    seedstring = f'{world.seed:09}' if isinstance(world.seed, int) else world.seed
     # todo: change to DR when Enemizer is okay with DR
-    rom.name = bytearray(f'ER{__version__.split("-")[0].replace(".","")[0:3]}_{team+1}_{player}_{world.seed:09}\0', 'utf8')[:21]
+    rom.name = bytearray(f'ER{__version__.split("-")[0].replace(".","")[0:3]}_{team+1}_{player}_{seedstring}\0', 'utf8')[:21]
     rom.name.extend([0] * (21 - len(rom.name)))
     rom.write_bytes(0x7FC0, rom.name)