actions: add golangci-lint action for sealer

[allencloud]

Signed-off-by: Allen Sun shlallen1990@gmail.com

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[codecov]

Codecov Report

Merging #11 (7af91b6) into main (61c1a72) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main      #11   +/-   ##
=======================================
  Coverage   11.74%   11.75%           
=======================================
  Files          76       76           
  Lines        6792     6790    -2     
=======================================
  Hits          798      798           
+ Misses       5892     5890    -2     
  Partials      102      102           

Impacted Files	Coverage Δ
pkg/image/save/filesystem.go	0.80% <0.00%> (ø)
pkg/plugin/etcd_backup_plugin.go	4.54% <0.00%> (ø)
utils/os/readers.go	0.00% <0.00%> (ø)
utils/strings/strings.go	36.13% <0.00%> (ø)

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