Add hero Gollum

[tdauth]

• Race: Sauron's Forces
• Spells: Ring of Power, Mirror Image/Split into two personalities,
• https://www.hiveworkshop.com/threads/gollum.241562/
• Icon from my map: https://www.hiveworkshop.com/resources/the-siege-of-minas-tirith-0-7.81730/resources-in-use

[tdauth]

No more non-Warcraft theme.