Merge pull request #87 from rapidaai/telemetry-issue-80-foundation

Feat: External Telemetry integration #80

fix: gofmt .

fix: gofmt .

feat: added change for agentkit test and ui fixes

release: v2.0.0 — Telephony reliability, SIP, WebRTC, Asterisk

Telephony stack rebuilt around a unified channel architecture. Every provider
(Twilio, Vonage, Exotel, Asterisk, SIP) now shares the same hardened base
layer with deterministic audio framing, atomic interruption, and persistent
call context (000005 migration).

Highlights:
- Native SIP integration with RTP/SDP/session management
- Asterisk AudioSocket + WebSocket inbound/outbound support
- WebRTC channel with Opus codec and gRPC signalling
- call_contexts table for reliable async provider callbacks
- Per-speaker recording split (assistant + user tracks, 000006 migration)
- Sentence-level LLM text aggregator for lower TTS first-word latency
- 31 BaseStreamer tests, full telephony provider test suite
- AgentKit executor stability fixes, MCP tool support
- Google TTS stale-response fix, first-token latency telemetry

feat: update react dependencies and removed unwanted logs

chore(refactor): remove the refs, logs, debug statements

fix: assistant model executor failure on empty variable issue #52

feat: doc, sdks submodules