feat/gfcli: replace gofmt&goimports with tools/imports

[BeanWei]

golang.org/x/tools/imports 替换 gofmt&goimports

[codecov-commenter]

Codecov Report

Merging #1935 (b49e017) into master (19779cd) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1935   +/-   ##
=======================================
  Coverage   75.56%   75.57%           
=======================================
  Files         512      512           
  Lines       46373    46373           
=======================================
+ Hits        35041    35045    +4     
+ Misses       9328     9323    -5     
- Partials     2004     2005    +1     

Flag	Coverage Δ
go-1.15-386	75.46% <ø> (-0.03%)	⬇️
go-1.15-amd64	75.46% <ø> (-0.01%)	⬇️
go-1.16-386	75.48% <ø> (+0.01%)	⬆️
go-1.16-amd64	75.47% <ø> (-0.01%)	⬇️
go-1.17-386	75.54% <ø> (+0.06%)	⬆️
go-1.17-amd64	75.51% <ø> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
os/gfsnotify/gfsnotify_filefunc.go	74.02% <0.00%> (-3.90%)	⬇️
os/gfsnotify/gfsnotify_watcher_loop.go	83.19% <0.00%> (+2.52%)	⬆️
os/gcache/gcache_adapter_memory_lru.go	97.91% <0.00%> (+8.33%)	⬆️

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