editoast: timetable-import: add PF and Sim timing to the endpoint's response

[Castavo]

Some things I'm not sure are good enough:

• naming of variables
• the macro for timing

linked to #6558

[codecov]

Codecov Report

Attention: 69 lines in your changes are missing coverage. Please review.

Comparison is base (dae6528) 27.89% compared to head (d288be7) 27.88%.
Report is 2 commits behind head on dev.

Files	Patch %	Lines
editoast/src/views/timetable/import.rs	5.47%	69 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #6587      +/-   ##
============================================
- Coverage     27.89%   27.88%   -0.01%     
- Complexity     2177     2178       +1     
============================================
  Files          1040     1040              
  Lines        127637   127678      +41     
  Branches       2610     2610              
============================================
+ Hits          35605    35607       +2     
- Misses        90501    90540      +39     
  Partials       1531     1531              

Flag	Coverage Δ
core	79.38% <ø> (+<0.01%)	⬆️
editoast	75.24% <12.65%> (-0.07%)	⬇️
front	8.41% <100.00%> (+<0.01%)	⬆️
gateway	2.50% <ø> (ø)
railjson_generator	87.25% <ø> (ø)
tests	81.95% <100.00%> (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.

[shenriotpro]

OK for tests/

[flomonster]

LGTM. Namings and the macro is okay.