theme registry refactoring, added .isApplicable method

src/mol-app/component/color-theme.tsx

src/mol-geo/geometry/color-data.ts

src/mol-geo/geometry/size-data.ts

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

...ior/dynamic/custom-props/pdbe/structure-quality-report.ts

...n/behavior/dynamic/custom-props/rcsb/assembly-symmetry.ts

src/mol-plugin/context.ts

src/mol-plugin/state/transforms/representation.ts

src/mol-theme/color.ts

src/mol-theme/color/carbohydrate-symbol.ts

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

src/mol-theme/color/cross-link.ts

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

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

src/mol-theme/color/molecule-type.ts

src/mol-theme/color/polymer-id.ts

src/mol-theme/color/polymer-index.ts

src/mol-theme/color/residue-name.ts

src/mol-theme/color/secondary-structure.ts

src/mol-theme/color/sequence-id.ts