Updated mol-geo to new Structure data model

src/apps/render-test/state.ts

src/apps/structure-info/model.ts

src/mol-geo/representation/structure/index.ts

src/mol-geo/representation/structure/point.ts

src/mol-geo/representation/structure/spacefill.ts

src/mol-geo/representation/structure/utils.ts

src/mol-geo/theme/structure/color/chain-id.ts

src/mol-geo/theme/structure/color/element-index.ts

src/mol-geo/theme/structure/color/element-symbol.ts

src/mol-geo/theme/structure/color/index.ts

src/mol-geo/theme/structure/color/instance-index.ts

src/mol-geo/theme/structure/size/element.ts

src/mol-geo/theme/structure/size/index.ts

src/mol-model/structure/structure.ts

src/mol-model/structure/structure/symmetry.ts

src/perf-tests/structure.ts