Create advanced neighbour view

[chreden]

Allow user to choose the level of depth of neighbour to show.
For example 1 would show the immediate neighbours - 2 would show the neighbours of those rooms.

[chreden]

This is in v1.0.1
https://github.com/chreden/trview/releases/tag/v1.0.1
Close issue if it's what you wanted.

[makotocchi]

Moving to another room after setting Neighbour Depth only updates the camera. This means the previous room plus its neighbours are rendered until you change the depth level again.

[chreden]

1.0.2 will regenerate neighbours when cycling through rooms.
https://github.com/chreden/trview/releases/tag/v1.0.2