[WIP] Trainer.call_hook re-design

[carmocca]

What does this PR do?

Fixes #8506

The hooks order and number have been kept.

Does your PR introduce any breaking changes? If yes, please list them.

Breaking for existingcall_hook users.

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[codecov]

Codecov Report

Merging #9029 (b947f07) into master (92e4979) will decrease coverage by 49%.
The diff coverage is 3%.

@@           Coverage Diff            @@
##           master   #9029     +/-   ##
========================================
- Coverage      93%     43%    -49%     
========================================
  Files         175     175             
  Lines       14400   14436     +36     
========================================
- Hits        13341    6269   -7072     
- Misses       1059    8167   +7108