BETA: Implemented `ExServerPrimitive` packet it can be used to display points and lines on client.

Reviewed by: !UnAfraid, Zoey76, xban1x

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6369 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad