Add commands to be able to manage friend/foe list.

[Sasabmeg]

~friend / ~friends

• for friend list or friend commands ~foe / ~foes
• for foe list or foe commands

Examples: ~foe ~foe add [name] ~foe add -i [player.Id] ~foe remove [name] ~foe rm -id [player.Id] ~foe clean ~foe reset

• If a player deletes self after on a friend/foe list of someone lese, they will show their old id number, but their names will be "N/A deceased"
• If list is full, it will delete and free oldest 10 entries automatically
• remove = rm = -r
• add = -a
• -i = -id
• reset = res - this will remove all entries from list.
• clean = -cl - this will remove invalid entries from both list