feat: add secure option for sending traces via otlphttp

[AlexLast]

Adds support for sending traces via otlphttp securely

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.21%. Comparing base (2629636) to head (5e0f92f).
Report is 49 commits behind head on master.

❗ Current head 5e0f92f differs from pull request most recent head e7d6bc3. Consider uploading reports for the commit e7d6bc3 to get more accurate results

Additional details and impacted files

Files	Coverage Δ
core/trace/agent.go	95.31% <100.00%> (-1.24%)	⬇️

... and 252 files with indirect coverage changes