refactored bindings and interactivity

src/mol-canvas3d/canvas3d.ts

src/mol-canvas3d/controls/bindings.ts

src/mol-canvas3d/controls/trackball.ts

src/mol-canvas3d/helper/interaction-events.ts

src/mol-plugin/behavior/behavior.ts

src/mol-plugin/behavior/dynamic/camera.ts

src/mol-plugin/behavior/dynamic/representation.ts

...dynamic/selection/structure-representation-interaction.ts

src/mol-plugin/behavior/dynamic/volume-streaming/behavior.ts

src/mol-plugin/context.ts

src/mol-plugin/index.ts

src/mol-plugin/ui/sequence/residue.tsx

src/mol-plugin/ui/sequence/sequence.tsx

src/mol-plugin/ui/viewport.tsx

src/mol-plugin/util/interactivity.ts

src/mol-plugin/util/structure-element-selection.ts

src/mol-plugin/util/structure-selection-helper.ts

src/mol-util/binding.ts