[WIP] Pluggable fsm

[KKcorps]

DO NOT MERGE THIS

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.61%. Comparing base (59551e4) to head (176e067).
Report is 1091 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (59551e4) and HEAD (176e067). Click for more details.

HEAD has 7 uploads less than BASE

Flag	BASE (59551e4)	HEAD (176e067)
skip-bytebuffers-false	7	6
unittests	5	3
java-11	5	4
unittests2	3	0

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #14088      +/-   ##
============================================
- Coverage     61.75%   55.61%   -6.14%     
- Complexity      207      796     +589     
============================================
  Files          2436     2044     -392     
  Lines        133233   108225   -25008     
  Branches      20636    17168    -3468     
============================================
- Hits          82274    60190   -22084     
+ Misses        44911    43247    -1664     
+ Partials       6048     4788    -1260     

Flag	Coverage Δ
custom-integration1	100.00% <ø> (+99.99%)	⬆️
integration	100.00% <ø> (+99.99%)	⬆️
integration1	100.00% <ø> (+99.99%)	⬆️
integration2	0.00% <ø> (ø)
java-11	55.56% <ø> (-6.15%)	⬇️
java-21	55.46% <ø> (-6.17%)	⬇️
skip-bytebuffers-false	55.60% <ø> (-6.15%)	⬇️
skip-bytebuffers-true	55.41% <ø> (+27.68%)	⬆️
temurin	55.61% <ø> (-6.14%)	⬇️
unittests	55.61% <ø> (-6.14%)	⬇️
unittests1	55.61% <ø> (+8.72%)	⬆️
unittests2	?

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