[FEATURE] Add telemetry/analytics to track Feluda usage

[anistark]

Summary

Implement cloud-based telemetry to understand how Feluda is being used in the community.

Goals

Track:

• Which commands/features are most used (license, sbom, generate)
• User system information (OS, architecture)
• Performance metrics (execution time, file sizes analyzed)
• Error tracking and failure rates

Options:

Tool	Free Tier	Key Features
PostHog	1M events/month	Rich dashboard, session replays, feature flags, Rust SDK available
Umami	100K events/month (hobby) or $20/mo unlimited	Privacy-focused, lightweight, open-source, simple dashboard
Self-Hosted (OpenTelemetry + SigNoz/Grafana)	Free	Full control, privacy, unlimited events, requires infrastructure

Questions to Discuss

• Which tool best fits Feluda's needs?
• Should we prioritize ease of integration, cost, or data ownership?
• Are there privacy/consent concerns to address?
• Should this be opt-in or opt-out?

Any thoughts and suggestions are welcome!