feat: add telemetry propagators between gateway and editoast

[woshilapin]

This will allow traces to flow through services like they should. Here is an example in Datadog

Closes #6347

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 28.27%. Comparing base (ae6706b) to head (e1354a7).

❗ Current head e1354a7 differs from pull request most recent head 670b9a1. Consider uploading reports for the commit 670b9a1 to get more accurate results

Files	Patch %	Lines
editoast/src/client/telemetry_config.rs	0.00%	6 Missing ⚠️
gateway/src/config.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #6822      +/-   ##
============================================
- Coverage     28.27%   28.27%   -0.01%     
  Complexity     2179     2179              
============================================
  Files          1053     1053              
  Lines        130813   130814       +1     
  Branches       2602     2602              
============================================
- Hits          36984    36983       -1     
- Misses        92316    92318       +2     
  Partials       1513     1513              

Flag	Coverage Δ
core	79.44% <ø> (ø)
editoast	74.82% <0.00%> (-0.01%)	⬇️
front	8.74% <ø> (ø)
gateway	2.49% <0.00%> (-0.01%)	⬇️
railjson_generator	87.26% <ø> (ø)
tests	83.07% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[flomonster]

LGTM

[ElysaSrc]