Returns {
    currentLayerInfo: ComputedRef<LayerInfo | undefined>;
    currentLayerName: WritableComputedRef<string, string>;
    layers: Reactive<LayerInfo[]>;
    setLayerColor: (layerName: string, colorIndex: number) => void;
    setLayerLineWeight: (layerName: string, lineWeight: number) => void;
}

• currentLayerInfo: ComputedRef<LayerInfo | undefined>

• currentLayerName: WritableComputedRef<string, string>

  ========================================================= Current layer (source of truth: database.clayer)

• layers: Reactive<LayerInfo[]>

• setLayerColor: (layerName: string, colorIndex: number) => void

• setLayerLineWeight: (layerName: string, lineWeight: number) => void