Send error logs through the event API with the correct task/subtask

[MarlonGamez]

Fixes: https://github.com/GoogleCloudPlatform/cloud-code-vscode-internal/issues/5281

Description
This PR ensures that error messages are getting sent with the correct task and subtask information through the Event API.

[tejal29]

hmm so different than #6515 :)
However, I am ok with this approach in case you feel more confident about this.

[codecov]

Codecov Report

Merging #6516 (0324458) into main (997edc8) will increase coverage by 0.00%.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##             main    #6516   +/-   ##
=======================================
  Coverage   70.43%   70.43%           
=======================================
  Files         515      515           
  Lines       23127    23142   +15     
=======================================
+ Hits        16289    16301   +12     
- Misses       5780     5783    +3     
  Partials     1058     1058           

Impacted Files	Coverage Δ
cmd/skaffold/skaffold.go	0.00% <0.00%> (ø)
pkg/skaffold/event/v2/event.go	84.58% <83.33%> (-0.06%)	⬇️
pkg/skaffold/event/v2/build.go	100.00% <100.00%> (ø)
pkg/skaffold/event/v2/deploy.go	100.00% <100.00%> (ø)
pkg/skaffold/util/tar.go	63.21% <0.00%> (-2.30%)	⬇️
pkg/skaffold/docker/parse.go	88.23% <0.00%> (+0.84%)	⬆️

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[MarlonGamez]

Thanks for the review @tejal29 ! My reasoning for the different approach was that I felt it was simpler to handle this in TaskFailed and the SubtaskFailed funcs as we wouldn't have to go and add print statements to the various failure points of build, deploy, etc, but rather just use the function that should already be called in any of those cases.