message: add building roof and material (needs checking)
diff: @@ -2,6 +2,8 @@ export interface Building {
  key: string
  type: string
  name: string
  + wordNoun: string
  + structure: BuildingStructure
  roll: BuildingRolls
  wealth: string
  sin: string
  @@ -17,6 +19,24 @@ export interface Building {
  }
  }
  +export interface BuildingStructure {
  + descriptor: string
  + descriptors: string[]
  + material: BuildingMaterial
  + roof: BuildingRoof
  +}
  +export interface BuildingRoof {
  + canBeColoured: boolean
  + colour: string
  + wealth: string
  + verb: string
  + noun: string
  +}
  +
  +export interface BuildingMaterial {
  + noun: string
  + wealth: string
  +}
  export interface BuildingRolls {
  activity: number
  cleanliness: number
  