feat(ko): Inferred file sync for ko static assets

[halvards]

This change adds inferred file sync mode to the ko builder.

Skaffold syncs static assets from the workspace to a running container, based on the <importpath>/kodata/ convention: https://github.com/google/ko#static-assets

Tracking: #7131

[codecov]

Codecov Report

Merging #7728 (260cdfc) into main (290280e) will decrease coverage by 3.76%.
The diff coverage is 53.59%.

@@            Coverage Diff             @@
##             main    #7728      +/-   ##
==========================================
- Coverage   70.48%   66.71%   -3.77%     
==========================================
  Files         515      588      +73     
  Lines       23150    28293    +5143     
==========================================
+ Hits        16317    18877    +2560     
- Misses       5776     8040    +2264     
- Partials     1057     1376     +319     

Impacted Files	Coverage Δ
cmd/skaffold/app/cmd/credits/export.go	0.00% <0.00%> (ø)
cmd/skaffold/app/cmd/deploy.go	40.90% <0.00%> (-12.94%)	⬇️
cmd/skaffold/app/cmd/test.go	44.44% <0.00%> (ø)
cmd/skaffold/skaffold.go	0.00% <0.00%> (ø)
cmd/skaffold/app/cmd/inspect_tests.go	62.50% <14.28%> (-1.14%)	⬇️
cmd/skaffold/app/cmd/render.go	35.48% <18.18%> (-5.90%)	⬇️
cmd/skaffold/app/cmd/lsp.go	28.12% <28.12%> (ø)
cmd/skaffold/app/cmd/run.go	64.28% <33.33%> (-9.63%)	⬇️
cmd/skaffold/app/cmd/fix.go	56.41% <37.50%> (-20.07%)	⬇️
cmd/skaffold/app/cmd/verify.go	41.17% <41.17%> (ø)
... and 347 more

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[tejal29]

First pass review. Will look through the code in detail later this week.