Unique dat and log file names

[lrampa]

Hi, I would like to execute the same DAG in multiple instances in parallel using containers, and gather the dat and log files from all runs in one common place (same as it is now under ~/.dagu).
This pull request adds request id to all file names to make them unique, and milliseconds for more precise tracking.

I am not sure about the change in Agent.Run() method though. It is now somewhat ugly (calling setupRequestId() before init()). If you see better way how to handle this point, I would be glad to change it.

Thanks, Lukas

[codecov-commenter]

Codecov Report

Merging #59 (9ab8640) into main (b5da55d) will decrease coverage by 0.08%.
The diff coverage is 84.21%.

@@            Coverage Diff             @@
##             main      #59      +/-   ##
==========================================
- Coverage   84.21%   84.13%   -0.09%     
==========================================
  Files          37       37              
  Lines        2585     2590       +5     
==========================================
+ Hits         2177     2179       +2     
- Misses        295      297       +2     
- Partials      113      114       +1     

Impacted Files	Coverage Δ
internal/agent/agent.go	80.25% <62.50%> (-0.95%)	⬇️
internal/database/database.go	88.44% <100.00%> (ø)
internal/scheduler/node.go	83.60% <100.00%> (+0.13%)	⬆️
internal/scheduler/scheduler.go	87.58% <100.00%> (ø)

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[yottahmd]

Hi, it looks fantastic. Thank you so much, @lrampa !

[yottahmd]

Hi @lrampa, could you please give it a star? so that github can show you in Contributors page. Thanks!

[lrampa]

Great, thanks for accepting.