added Structure property to StructureElement and Bond locations

src/apps/structure-info/model.ts

src/examples/proteopedia-wrapper/coloring.ts

...ps/computed/accessible-surface-area/shrake-rupley/area.ts

...s/computed/accessible-surface-area/shrake-rupley/radii.ts

src/mol-model-props/computed/interactions/interactions.ts

...puted/representations/interactions-inter-unit-cylinder.ts

...puted/representations/interactions-intra-unit-cylinder.ts

...l-props/rcsb/representations/validation-report-clashes.ts

...ol-model/structure/export/categories/modified-residues.ts

...-model/structure/export/categories/secondary-structure.ts

src/mol-model/structure/model/properties/custom/indexed.ts

src/mol-model/structure/query/context.ts

src/mol-model/structure/query/queries/filters.ts

src/mol-model/structure/query/queries/generators.ts

src/mol-model/structure/query/queries/internal.ts

src/mol-model/structure/query/queries/modifiers.ts

src/mol-model/structure/query/utils/builders.ts

src/mol-model/structure/query/utils/structure-distance.ts

src/mol-model/structure/structure/element/location.ts

src/mol-model/structure/structure/element/loci.ts