DX Overhaul: Automated Setup, Docker Infra, and Monorepo Orchestration

[apreezofficial]

Rationale

Onboarding to Outray currently involves several manual steps: installing multiple databases (Postgres, Redis, TimescaleDB), manually cloning .env files, and managing multiple terminal sessions. This PR eliminates that friction by automating the environment setup and orchestrating services from the root, reducing "Time to First Hello World" to under 2 minutes.

Changes

• Infrastructure as Code: Added docker-compose.yml to spin up a complete local dev environment (Postgres, Redis, TimescaleDB) with one command.
• Service Orchestration: Updated root package.json with a dev script using concurrently. A single npm run dev now manages the entire stack.
• Env Automation: Created a scripts/setup-envs.js utility and root command npm run setup:envs to automatically clone all .env.example templates across the monorepo.
• Monorepo Standardization: Standardized workspaces in package.json to include all apps/*, packages/*, and shared modules, ensuring correct symlinking.
• Documentation Refresh: Revamped CONTRIBUTING.md and README.md to reflect the streamlined workflow and updated project structure.

Validation

1. Run npm install at root -> links all internal packages correctly.
2. Run npm run setup:envs -> All .env files generated instantly.
3. Run docker compose up -d -> All required DB containers started.
4. Run npm run dev -> Web Dashboard, Tunnel Server, and CLI started in parallel.

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