chore: Consolidate go.mod into one file

[jooskim]

go.mod being split between main Transport library and Plank does not really add to anything useful, in fact it introduces unexpected behaviors as Plank's dependency to Transport is loosely defined. By consolidating the separate go.mod files we make the effort of versioning and maintaining Transport components and their dependencies much easier.

Signed-off-by: Josh Kim kjosh@vmware.com

[codecov-commenter]

Codecov Report

Merging #30 (b6377f1) into main (d6393a4) will decrease coverage by 15.83%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##             main      #30       +/-   ##
===========================================
- Coverage   97.35%   81.52%   -15.84%     
===========================================
  Files          29       45       +16     
  Lines        1816     2419      +603     
===========================================
+ Hits         1768     1972      +204     
- Misses         48      447      +399     

Flag	Coverage Δ
unittests	81.52% <0.00%> (-15.84%)	⬇️

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

Impacted Files	Coverage Δ
plank/pkg/server/server.go	28.49% <0.00%> (ø)
plank/utils/bytes.go	0.00% <0.00%> (ø)
plank/pkg/server/banner.go	52.27% <0.00%> (ø)
plank/utils/array.go	0.00% <0.00%> (ø)
plank/utils/runtime.go	88.88% <0.00%> (ø)
plank/utils/paths.go	0.00% <0.00%> (ø)
plank/pkg/server/neutered_fs.go	0.00% <0.00%> (ø)
plank/pkg/server/spa_config.go	0.00% <0.00%> (ø)
plank/utils/logger.go	21.27% <0.00%> (ø)
... and 7 more

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[daveshanley]

plank needs some test coverage bumps, it's dropped us 15% on coverage :)