Added loginsecurity module

Added to make an easily adjustible version of LoginSecurity.
LoginSecurity does not (seem to) support name changes since it retrieves
the UUID used from a byte[] of "OfflinePlayer:<username>" which means
the UUID changes when a player changes their name. This should fix
/rmpass. It uses BCrypt. I'll test this on the dev server (hoping bcrypt
is installed)

main.py

@@ -73,7 +73,9 @@ shared["load_modules"] = [
     #adds snowbrawl minigame
     #"snowbrawl",
     # Adds /tm [player] for a messages to be sent to this player via /msg
-    "pmtoggle"
+    "pmtoggle",
+    # Replacement for LoginSecurity
+    "loginsecurity"
     # NOTICE: If you add something here, please add a small descriptive comment above!
 ]
 shared["modules"] = {}