Add function to wait repetitive task to finish successfully when the DAG received a signal

[yohamta]

No description provided.

[codecov-commenter]

Codecov Report

Merging #40 (bc63dd8) into main (61c5174) will increase coverage by 2.08%.
The diff coverage is 90.00%.

@@            Coverage Diff             @@
##             main      #40      +/-   ##
==========================================
+ Coverage   60.02%   62.11%   +2.08%     
==========================================
  Files          37       37              
  Lines        2789     2795       +6     
==========================================
+ Hits         1674     1736      +62     
+ Misses        898      843      -55     
+ Partials      217      216       -1     

Impacted Files	Coverage Δ
internal/agent/agent.go	57.58% <0.00%> (-0.23%)	⬇️
internal/scheduler/scheduler.go	86.75% <100.00%> (+11.93%)	⬆️
internal/scheduler/node.go	83.47% <0.00%> (+19.83%)	⬆️

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