Base camp expansion garage wad (2/8)

[PatrikLundell]

Summary

Content "Adding wad as base camp garage expansion material"

Purpose of change

Expands on #51945 by adding wad (wattle-and-daub) as a building material.

Describe the solution

#51945 with an additional material.

Describe alternatives you've considered

N/A

Testing

Implementing it as the NE expansion. Only tested the full version, as the partial versions were tested in the first PR (the palisade gate can only have walls "made of" palisade).

Additional context

The garage with wattle-and-daub walls:

Edit: found I'd transposed a couple of character when trying to reference the base PR...