wip, interactions & valence-model label providers

src/mol-model-props/computed/chemistry/geometry.ts

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

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

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

src/mol-plugin/behavior/dynamic/custom-props.ts

...in/behavior/dynamic/custom-props/computed/interactions.ts

...n/behavior/dynamic/custom-props/computed/valence-model.ts

src/mol-plugin/index.ts

src/mol-plugin/util/substructure-parent-helper.ts

src/mol-theme/label.ts