Flaky Test Monitor - moving result processing to main repo

[gomisha]

splitting up for #1495 - this PR just is for the json processing code for the Flaky Test Monitor

original json processing code from https://github.com/onflow/flakiness-summary - that repo will be discontinued as explained in #1495

[synzhu]

Thanks :)

[codecov-commenter]

Codecov Report

Merging #1500 (de3821f) into master (11299bb) will increase coverage by 0.02%.
The diff coverage is 67.70%.

@@            Coverage Diff             @@
##           master    #1500      +/-   ##
==========================================
+ Coverage   55.09%   55.11%   +0.02%     
==========================================
  Files         520      521       +1     
  Lines       32418    32514      +96     
==========================================
+ Hits        17860    17920      +60     
- Misses      12161    12187      +26     
- Partials     2397     2407      +10     

Flag	Coverage Δ
unittests	55.11% <67.70%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
tools/flaky_test_monitor/process_results.go	67.70% <67.70%> (ø)
module/synchronization/status.go	41.17% <0.00%> (-17.65%)	⬇️
module/synchronization/core.go	76.21% <0.00%> (-7.93%)	⬇️
engine/collection/synchronization/engine.go	63.97% <0.00%> (+1.07%)	⬆️
admin/command_runner.go	78.94% <0.00%> (+1.75%)	⬆️
...sus/approvals/assignment_collector_statemachine.go	42.30% <0.00%> (+1.92%)	⬆️
module/component/component.go	40.77% <0.00%> (+2.91%)	⬆️
...ngine/common/synchronization/finalized_snapshot.go	72.91% <0.00%> (+4.16%)	⬆️

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