wip, added renderer, removed regl dep from geo

src/apps/render-test/state.ts

src/apps/render-test/ui.tsx

src/mol-geo/representation/structure/index.ts

src/mol-geo/representation/structure/spacefill.ts

src/mol-gl/camera.ts

src/mol-gl/renderable.ts

src/mol-gl/renderable/mesh.ts

src/mol-gl/renderable/util.ts

src/mol-gl/renderer.ts

src/mol-gl/util.ts