feat: restore hcatOptimizedWordlists config and use as quick crack default

Re-add hcatOptimizedWordlists config key (previously removed) with a
default of ./optimized_wordlists. Falls back to hcatWordlists if the
configured directory does not exist.

Update quick_crack to list files from and default to hcatOptimizedWordlists
instead of hcatWordlists when prompting for a wordlist or directory.

config.json.example

@@ -5,6 +5,7 @@
   "hcatPotfilePath": "~/.hashcat/hashcat.potfile",
   "hcatDebugLogPath": "./hashcat_debug",
   "hcatWordlists": "./wordlists",
+  "hcatOptimizedWordlists": "./optimized_wordlists",
   "rules_directory": "./hashcat/rules",
   "hcatDictionaryWordlist": ["rockyou.txt"],
   "hcatCombinationWordlist": ["rockyou.txt","rockyou.txt"],