Add filter on tag player.target

Now we can specify a npc/&lt;entity&gt;/&lt;entity.type&gt; as target.
few examples
&lt;p@player.target[npc]&gt; will target only npc
&lt;p@player.target[player]&gt; will target only npc
&lt;p@player.target[e@123|e@321|zombie]&gt; will target only entity 123 or 321
or zombie