feat: Livekit - Selfhost video room solution (#946)

* feat: Livekit bare no recording nor pipeline

* feat: full livekit pipeline

* fix: caddy hatchet with livekit

* fix: caddy livekit

* fix: hatchet tls

* fix: agg to webm for no padding

* fix: reflector user id on participants and duration fix

* fix: better docs and internal review fixes

* fix: remove video files livekit

egress.yaml.example

@@ -0,0 +1,26 @@
+# LiveKit Egress configuration
+# Generated by setup-selfhosted.sh — do not edit manually.
+# See: https://docs.livekit.io/self-hosting/egress/
+
+api_key: __LIVEKIT_API_KEY__
+api_secret: __LIVEKIT_API_SECRET__
+ws_url: ws://livekit-server:7880
+redis:
+  address: redis:6379
+
+# Health check
+health_port: 7082
+
+# Logging
+log_level: info
+
+# CPU cost limits (Track Egress only — no composite video)
+# Track Egress costs 1.0 CPU unit per track; hundreds can run on one instance.
+# Default max_cpu_utilization is 0.8 (80% of available cores).
+
+# Session limits
+session_limits:
+  file_output_max_duration: 4h   # Max 4 hours per recording
+
+# S3 storage is configured per-request via the API (not here).
+# The server passes S3 credentials when starting each Track Egress.