Add minimap rotation and facing cone options

[aizuon]

Summary

• add a toggle that rotates circular minimap textures with the player
• add an independent blue facing cone for circular and square minimaps
• place both controls at the end of the Minimap Display section

Why

These options make the player's facing direction easier to read at a glance. Rotation uses WoW's native minimap behavior for circular maps, while the facing cone also supports square maps without exposing the native rotating renderer's empty corners.

Demo

Wow_0Sj6LGe6Ww.mp4