Renamed Conformation to AtomSiteConformation

src/mol-model/structure/model/formats/gro.ts

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

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

...odel/structure/model/properties/atom-site-conformation.ts

src/mol-model/structure/model/properties/coarse-grained.ts

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

...cture/structure/element/properties/bonds/group-compute.ts

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

src/perf-tests/structure.ts