siptrace: add X-Siptrace headers when configured core callback mode and SIP URI traffic mirroring

- Added X-Siptrace headers in core callback mode for SIP URI traffic duplication, headers also available in event route for filtering purporses.

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#### Description

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/3049

-- Commit Summary --

* siptrace: add X-Siptrace headers when configured core callback mode and SIP URI traffic mirroring

-- File Changes --

M src/modules/siptrace/siptrace.c (5)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3049.patch https://github.com/kamailio/kamailio/pull/3049.diff