Initial WIP playback service

packages/client/src/views/Virtuals/Virtuals.tsx

packages/client/src/views/Virtuals/index.ts

packages/playback-service/.eslintrc.json

packages/playback-service/README.md

packages/playback-service/_package.json

packages/playback-service/src/controllers/playback.ts

packages/playback-service/src/index.ts

packages/playback-service/src/models/archive.ts

packages/playback-service/src/models/playback.ts

packages/playback-service/src/server.ts

packages/playback-service/src/services/playback.ts

packages/playback-service/tsconfig.json