tracing: add support for OTEL

Feature

• Add OTEL support to the tracking pkg.
• Instrument http and grpcserver packages

Breaking Changes

xray tracing config structure has changed before:

tracing:
  provider: xray
  addr_type: local
  addr_value: ""

after:

tracing:
  provider: xray
  xray:
    addr_type: local
    addr_value: ""

Usage examples

tracing:
  provider: otel
  otel:
    exporter: otel_http
    http:
      endpoint: localhost:4318
      url_path: /v1/traces
      compression: true
      insecure: true
      timeout: 10s
      retry:
        enabled: false

What's Changed

• tracing: add support for OTEL by @netsi in #1109

Full Changelog: v0.29.2...v0.30.0