mol-plugin: ObjectList control

src/mol-plugin/skin/base/components/controls-base.scss

src/mol-plugin/skin/base/components/temp.scss

src/mol-plugin/state/actions/structure.ts

src/mol-plugin/state/transforms/data.ts

src/mol-plugin/state/transforms/misc.ts

src/mol-plugin/state/transforms/model.ts

src/mol-plugin/state/transforms/volume.ts

src/mol-plugin/ui/controls/parameters.tsx

src/mol-util/param-definition.ts