wip, overpaint plugin

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

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

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

src/mol-plugin/index.ts

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

src/mol-repr/shape/representation.ts

src/mol-repr/structure/complex-visual.ts

src/mol-repr/structure/units-visual.ts

src/mol-theme/overpaint.ts