Refactoring mol-model/query

src/mol-app/ui/visualization/sequence-view.tsx

src/mol-model/structure/model/formats/mmcif/assembly.ts

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

src/mol-model/structure/query.ts

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

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

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

src/perf-tests/structure.ts

src/servers/model/server/api.ts

src/servers/model/server/query.ts