Add Docker support with Dockerfile and docker-compose.yml, update build scripts and README for containerized deployment.

- Updated server `Bun.build` configuration: adjusted `outdir`, added `format` as `esm`, and set `@open-gsio/client` to external.
- Expanded README with Docker instructions.
- Added new package `@open-gsio/analytics-worker`.
- Upgraded dependencies (`vite`, `typescript`, `bun`) and locked `pnpm` version in `package.json`.

docker-compose.yml

@@ -0,0 +1,13 @@
+version: '3'
+services:
+  open-gsio:
+    image: open-gsio:latest
+    build:
+      pull: false
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "3003:3003"
+    env_file:
+      - ./packages/server/.env
+    restart: unless-stopped