fixed and updated rcsb assembly symmetry prop

.vscode/settings.json

README.md

package.json

src/mol-model-props/rcsb/assembly-symmetry.ts

src/mol-model-props/rcsb/graphql/symmetry.gql.ts

src/mol-model-props/rcsb/graphql/types.ts

src/mol-model-props/rcsb/themes/assembly-symmetry-cluster.ts